1)14(2у-3)-5(у+4)=2(3у+5)+5у 28y-42-5y-20=6y+10+5y 28y-5y-6y-5y=42+20+10 12y=72 y=6 2)5 + 7у-12 = у+13 3 15+7y-12=3y+39 7y-3y=12-15+39 4y=36 y=9