0.3分之x-1-0.5分之x+2=-4
问题描述:
0.3分之x-1-0.5分之x+2=-4
答
10(x-1)/3-2(x+2)=-4
10(x-1)-6(x+2)=-12
10x-10-6x-12=-12
4x=10
x=5/2