Question

номер :116 пожалуйста

Answer 1

1)13x-11y+10z+15x-10y+15z=28x+21y+25z
2)17n+12m-14p-11m+10n+14p=27n+m
3)-2^3+ab^2+a^2 b-1+a^2b-ab^2+3a^3=a^3+2a^2b-1
4)3m^2+5mn +7m^2y-5mn-3m^2-7m^3y-3m^2=7m^2y-5mn-3m^2-7m^3y