20%(x-1)=6要怎么算啊?
问题描述:
20%(x-1)=6要怎么算啊?
答
20%(x-1)=6
两边同乘以 5 得
x-1 = 30
x = 31
20%(x-1)=6要怎么算啊?
20%(x-1)=6
两边同乘以 5 得
x-1 = 30
x = 31