若式子2x-1/5比3x+2/5少2,则x的值为( )A.5/7.B.-7/5.C.-5/7.D.7/5.

问题描述:

若式子2x-1/5比3x+2/5少2,则x的值为( )A.5/7.B.-7/5.C.-5/7.D.7/5.

2x-1/5=3x+2/5-2
x=2-2/5-1/5
x=7/5
选D