当m=______,n=______时,2xmy3与-3xy3n是同类项.
当m=______,n=______时,2xmy3与-3xy3n是同类项.
若单项式3x2yn与-2xmy3是同类项,则m+n=______.
若单项式4xmy3与-x2yn-1的和是单项式,则m=______,n=______.
单项式3xm+2ny8与-2x2y3m+4n是同类项,则m+n=______.
2a5bn+2与-9am+nb5是同类项.求2m-3n=______.
已知代数式2a3bn+1与-3am+2b2是同类项,则2m+3n=______.
已知代数式2a3bn+1与-3am-2b2是同类项,则m+2n=______.
单项式3x^m+2 y^7与-2x^4 y^2m+3n是同类项,则m+n=______
若2003xn+7与2004x2n+3是同类项,则n=______.
如果2x的3m-1次方y的4次方与-3x的8次方y的2n次方是同类项,则m=___,n=______.
已知0≤m-n≤2,2≤m+n≤4,则当m-2n达到最小值时,3m+4n=______.
当n表示自然数时,2n表示______,2n+1表示______,与2n+1相邻的两个偶数是______和______.