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> 分式方程1x-2-1-x2-x=1的两边同乘以(x-2),约去分母得()A.1+(1-x)=x-2B.1-(1-x)=x-2C.1-(1-x)=1D.1+(1-x)=1-数学
分式方程1x-2-1-x2-x=1的两边同乘以(x-2),约去分母得()A.1+(1-x)=x-2B.1-(1-x)=x-2C.1-(1-x)=1D.1+(1-x)=1-数学
题目简介
分式方程1x-2-1-x2-x=1的两边同乘以(x-2),约去分母得()A.1+(1-x)=x-2B.1-(1-x)=x-2C.1-(1-x)=1D.1+(1-x)=1-数学
题目详情
分式方程
1
x-2
-
1-x
2-x
=1
的两边同乘以(x-2),约去分母得( )
A.1+(1-x)=x-2
B.1-(1-x)=x-2
C.1-(1-x)=1
D.1+(1-x)=1
题型:单选题
难度:偏易
来源:不详
答案
观察可得两个分母2-x=-(x-2),所以最简公分母为(x-2),去分母得1+(1-x)=x-2.故选A.
上一篇 :
(1)2-xx-3+13-x=1(2)11-x2=-3x-1-5
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已知:关于x的方程2-xx-3=-2-ax-
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题目简介
分式方程1x-2-1-x2-x=1的两边同乘以(x-2),约去分母得()A.1+(1-x)=x-2B.1-(1-x)=x-2C.1-(1-x)=1D.1+(1-x)=1-数学
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