(2x/3)/40- (2x/3)/80=1.5怎么算
问题描述:
(2x/3)/40- (2x/3)/80=1.5怎么算
答
(2x/3)/40- (2x/3)/80=1.5
(4x/3)/80- (2x/3)/80=1.5
(2x/3)/80=1.5
2x/3=120
2x=360
x=180