10*(X-Y)=20(X-3Y) 怎么解

问题描述:

10*(X-Y)=20(X-3Y) 怎么解

10×(X-Y)=20×(X-3Y)
10X-10Y=20X-60Y
10X-20X=-60Y+10Y
-10X=-50Y
X=5Y
只能解到这里了