(1+x%)*9=8
问题描述:
(1+x%)*9=8
x等于多少
答
(1+x%)*9=8
(1+x)%=8÷9
(1+x)/100=8/9
1+x=8/9÷1/100
1+x=800/9
x=800/9-1
x=791/9