解方程 1.25X-X=28
问题描述:
解方程 1.25X-X=28
答
1.25X-X=28
(1.25-1)x=28
0.25x=28
x=28*4
x=112(1+40%)X=98这道题呢(有奖励)(1+40%)X=98(1+0.4)x=981.4x=98x=98÷1.4x=70