Question

已知x的m+n次方y的m-n次方与2/3x的7-m次方y的1+n次方是同类项,则m=[],n=[]

Answer 1

依题意m+n=7-m,

m-n=1+n,

化简得2m+n=7,

m-2n=1.

解得m=3,n=1.