10.5(x-4)=2.5x
问题描述:
10.5(x-4)=2.5x
答
10.5x-2.5x=10.5*4
8x=42
x=5.2
10.5(x-4)=2.5x
10.5x-2.5x=10.5*4
8x=42
x=5.2