怎么解5.1X-2(X+3)=12.6
问题描述:
怎么解5.1X-2(X+3)=12.6
答
5.1X-2(X+3)=12.6
5.1x-2x-6=12.6
5.1x-2x=12.6+6
3.1x=18.6
x=6