分式方程最新练习题100题-15

分式方程最新练习题100题-15 1401:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1402:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1403:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1404:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1405:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1406:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1407:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1408:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1409:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1410:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1411:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1412:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1413:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1414:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1415:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1416:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1417:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1418:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1419:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1420:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1421:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1422:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1423:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1424:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1425:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1426:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1427:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1428:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间 每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1429:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1430:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1431:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1432:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1433:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1434:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1435:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1436:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1437:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1438:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1439:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1440:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1441:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1442:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1443:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1444:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1445:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1446:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1447:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1448:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1449:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1450:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1451:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1452:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1453:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1454:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1455:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1456:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1457:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1458:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1459:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1460:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1461:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1462:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1463:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1464:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1465:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1466:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1467:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1468:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间 每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1469:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1470:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1471:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1472:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1473:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1474:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1475:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1476:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1477:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1478:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1479:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1480:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1481:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1482:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1483:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1484:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1485:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1486:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1487:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1488:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x }=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x }=33 1489:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1490:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1) 1491:(2013.重庆)分式方程\frac{2}{x-2}-\frac{1}{x}=0的根是( )A(x=1B(x=-1C(x=2D(x=-2 1492:(2013.湛江)计算\frac{2}{x-2}-\frac{x}{x-2}的结果是( )A(0B(1C(-1D(x 1493:(2013.温州)若分式\frac{x-3}{x+4}的值为0，则x的值是( )A(x=3B(x=0C(x=-3D(x=-4 1494:(2013.威海)下列各式化简结果为无理数的是 ( )A(\sqrt[3]{-27}B({(\sqrt{2}-1)}^{0}C(\sqrt{8}D(\sqrt{{(-2)}^{2}} 1495:(2013.泰安)下列运算正确的是( )A(3{x}^{3}-5{x}^{3}=-2xB(6{x}^{3}?2{x}^{-2}=3xC({(\frac{1}{3}{x}^{3})}^{2}=\frac{1}{9}{x}^{6}D(-3(2x-4)=-6x-12 1496:(2013.泰安)化简分式\frac{2}{x-1}?(\frac{2}{{x}^{2}-1}+\frac{1}{x+1})的结果是( )A(2B(\frac{2}{x+1}C(\frac{2}{x-1}D(-2 1497:(2013.泰安){(-2)}^{-2}等于( )A(-4B(4C(-\frac{1}{4}D(\frac{1}{4} 1498:(2013.泰安)某电子元件厂准备生产4600个电子元件，甲车间独立生产了一半后，由于要眷投入市场，乙车间也加入该电子元件的生产，若乙车间每天生产的电子元件是甲车间的1.3倍，结果用33天完成任务，问甲车间每天生产电子元件多少个,在这个问题中设甲车间每天生产电子元件x个，根据题意可得方程为 ( )A(\frac{2300}{x}+\frac{2300}{1.3x}=33B(\frac{2300}{x}+\frac{2300}{x+1.3x}=33C(\frac{2300}{x}+\frac{4600}{x+1.3x}=33D(\frac{4600}{x}+\frac{2300}{x+1.3x}=33 1499:(2013.苏州)已知x-\frac{1}{x}=3，则4-\frac{1}{2}{x}^{2}+\frac{3}{2}x的值为( )A(1B(\frac{3}{2}C(\frac{5}{2}D(\frac{7}{2} 1500:(2013.山西)解分式方程\frac{2}{x-1}+\frac{x+2}{1-x}=3时，去分母后变形为( )A(2+(x+2)=3(x-1)B(2-x+2=3(x-1)C(2-(x+2)=3(1-x)D(2-(x+2)=3(x-1)