(X-140)*(1-40%)=1/5X

来源：学生作业帮助网编辑：六六作业网时间：2024/11/22 11:28:45

(X-140)*(1-40%)=1/5X(X-140)*(1-40%)=1/5X(X-140)*(1-40%)=1/5X(X-140)*(1-40%)=1/5X60%(x-140)=x/53/5(x-

(X-140)*(1-40%)=1/5X
(X-140)*(1-40%)=1/5X

(X-140)*(1-40%)=1/5X
(X-140)*(1-40%)=1/5X
60%(x-140)=x/5
3/5(x-140)=x/5
3(x-140)=x
3x-420=x
2x=420
x=210
请点击下面的【选为满意回答】按钮,