3m+n+6=24,求6m+2n的值
问题描述:
3m+n+6=24,求6m+2n的值
答
3m+n=24-6=18
6m+2n=18*2=36
答
3m+n+6=24
3m+n=18
6m+2n=36
答
18
答
3m+n+6=24
3m+n=24-6=18
2(3m+n)=6m+2n=36
答
由3m+n+6=24可得:3m+n=18.所以6m+2n=2*(3m+n)=2*18=36