(17n+12m-14p)-(11m-10n-14p) 3m2+5mn+7m2y)-(5mn+3m2)-(7m3y-3m2)
(17n+12m-14p)-(11m-10n-14p)= 17n+12m-14p-11m+10n+14p=27n+m (3m^2+5mn+7m^2y)-(5mn+3m^2)-(7m^3y-3m^2)= 3m^2+5mn+7m^2y-5mn-3m^2-7m^3y+3m^2=3m^2+10m^2y-7m^3y=m^2 (3+10y-7my)