2x-4(x-15)=18
问题描述:
2x-4(x-15)=18
答
2x-4(x-15)=18
2x-4x+60=18
2x=42
x=21
2x-4(x-15)=18
2x-4(x-15)=18
2x-4x+60=18
2x=42
x=21