Помогите даю 10 баллов
1) (x + a) - 7 = 42 a = ? x = 22
(22 + a) - 7 = 42
22 + a = 42 + 7
22 + a = 49
a = 49 - 22
a = 27
2) (a - x) + 4 = 15 a = ? x = 3
(a - 3) + 4 = 15
a - 3 = 15 - 4
a - 3 = 11
a = 11 + 3
a = 14