(2x-45)÷x=1/5 x=25
问题描述:
(2x-45)÷x=1/5 x=25
(2x-45)÷x=1/5 x=25
答
(2x-45)÷x=1/5
两边乘以 5x
10x - 225 = x
9x = 225
x=25