Решите! a)y/3=y/2-7 b)z/5=z/10+1
У/3=y/2-7 y/3=y/-5 |*15 5y=-3y 8y=0 y=0 z/5=z/10+1 z/5=z/11 |*55 11z=5z 6z=0 z=0