11 - 2 * a = 11 - 2 * 5 = 11 - 10 = 1
(9 + x) : 4 = (9 + 19) : 4 = 28 : 4 = 7
9 * 2 - b = 9 * 2 - 9 = 18 - 9 = 9
36 - c : 2 = 36 - 18 : 2 = 36 - 9 = 27
Ответ: 1, 7, 9, 27