解方程:(X+215)÷9/10=(x-125)÷8/10
问题描述:
解方程:(X+215)÷9/10=(x-125)÷8/10
答
(X+215)÷9/10=(x-125)÷8/10
(X+215)÷9=(x-125)÷8
8(X+215)=9(x-125)
8x+215*8=9x-125*9
8x-9x=-1125-1720
-x=-2845
x=2845