3) |n - 7 = 2; 4) |15 + n = 3.
399. Решите уравнения:
1) m + 8 = 2; 2) [m - 9 = 5;
Образец: m + 4 = 1.
m + 4 - 1 или m + 4 = - 1.
m - 1 - 4 m = - 1 - 4,
m = -3, m = - 5.
126
Ответ: -5; -3.
пж​ ну пж
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