Решите уравнение 64+36:(x*3-15)=70
64 + 36 : (х*3 - 15) = 70 36 : (3х - 15) = 70 - 64 36 : (3х - 15) = 6 3х - 15 = 36 : 6 3х - 15 = 6 3х = 6 + 15 = 21 х = 21 : 3 = 7