(35x+50)÷(x+1)=40

题目

(35x+50)÷(x+1)=40
怎么解方程式,把式子列出来!

答案

(35x+50)÷(x+1)=40
40(x+1)=35x+50
40x+40=35x+50
40x-35x=50-40
5x=10
x=2