23x - (14 + 9x) - 5x = 1323x - 14 - 9x - 5x = 13(23x - 9x - 5x) - 14 = 139x - 14 = 139x = 13 + 149x = 27x = 27 / 9x = 3
Ответ: x = 3.
23x - (14 + 9x) - 5x = 13
23x - 14 - 9x - 5x = 13
(23x - 9x - 5x) - 14 = 13
9x - 14 = 13
9x = 13 + 14
9x = 27
x = 27 / 9
x = 3
Ответ: x = 3.