-10y+m -6n-4y-6+9m-2n+8=
8x+7y-5x+8-6x-4y+2=
12x^2-9+3m^2 y-4x^3 n+4m^2 y+2x^3 n+7=
-7v+5y-4v-7+6u-6y+9=
10x^2-9+5m^2 y+x^3 n+4m^2 y-5x^2=
-14y+10m-8n+2
-11v-y+6u+2
-3x+3y+10
12x^2+7m^2 y- 2x^3 n-2
5x^2+9m^2 y-9 +x^3 n
