6x+4(10-x)=42
问题描述:
6x+4(10-x)=42
答
6X+40-4x=42
6X-4X=42-40
2X=2
X=1
6x+4(10-x)=42
6X+40-4x=42
6X-4X=42-40
2X=2
X=1