(x-3)分之(2m+m)=3的解是正数,求m的取值范围
问题描述:
(x-3)分之(2m+m)=3的解是正数,求m的取值范围
答
(2m+m)/(x-3)=3
3m=3(x-3)
x=m+3
m+3>0
m>-3