已知m+n=8,则2+2m+2n的值为
问题描述:
已知m+n=8,则2+2m+2n的值为
答
2+2m+2n
=2+2(m+n)
=2+2×8
=18
已知m+n=8,则2+2m+2n的值为
2+2m+2n
=2+2(m+n)
=2+2×8
=18