Решите уравнения: 5a = -a-13 ; 6-4у=у+3 ; 9х = 8х-6; -5 (z-7) = 30 - (2z+1).

5a = -a-13 5а+а=-136а=-13а=-13/6а=-2 1/66-4у=у+3 6-3=у+4у5у=3у=3/59х = 8х-69х-8х=-6х=-6-5 (z-7) = 30 - (2z+1)-5z+35 = 30-2z-135-29=-2z+5z3z=6z=2