Question

已知单项式3x^my^3m+n与-x³y^m+7是同类项，那么m=______，n=______．

Answer 1

∵单项式3x^my^3m+n与-x³y^m+7是同类项，
∴

m=-3 3m+n=m+7

，解得

m=-3 n=13

．
故答案为：-3；13．