m-n=2,m-2n=3求m,n
问题描述:
m-n=2,m-2n=3求m,n
答
m-n=2
m=2+n
2+n-2n=3
n= -1
m=1
m-n=2,m-2n=3求m,n
m-n=2
m=2+n
2+n-2n=3
n= -1
m=1