若2x4yn与-5xmy是同类项,则m+n=______.
若单项式-4XmY²与2/1X4次方Yn是同类项,则m-n等于?
已知-2xmy与3x3yn是同类项,求m-(m2n+3m-4n)+(2nm2-3n)的值.
若单项式3x2yn与-2xmy3是同类项,则m+n=______.
当m=______,n=______时,2xmy3与-3xy3n是同类项.
单项式3xm+2ny8与-2x2y3m+4n是同类项,则m+n=______.
已知代数式2a3bn+1与-3am-2b2是同类项,则m+2n=______.
已知代数式2a3bn+1与-3am+2b2是同类项,则2m+3n=______.
若2003xn+7与2004x2n+3是同类项,则n=______.
已知单项式-5x3yn与5xm+1y3是同类项,则m-n的值为______.
2a5bn+2与-9am+nb5是同类项.求2m-3n=______.
单项式3x^m+2 y^7与-2x^4 y^2m+3n是同类项,则m+n=______
若单项式2/3A^4 B^4N-5与-4A^M+1 B^1/2(N+2)是同类项,则M=(),N=()