问题 填空题 若单项式-4xm-1yn+1与23x2m-3y3n-5是同类项,则m=______,n=______. 答案 ∵单项式-4xm-1yn+1与23x2m-3y3n-5是同类项,∴m-1=2m-3,n+1=3n-5解得:m=2,n=3.