Ответы на вопрос:
Объяснение:
1. -6x - 13 = -7x - 14
-6x + 7x = - 14 + 13
X = -1
2. 5x = 8 + 3(2x + 3)
5x = 8 + 6x + 9
5x - 6x = 8 + 9
-1x = 17
X = - 17
3. 3(4x + 1) + 3x = 2x - 23
12x +3 +3x = 2x - 23
12x + 3x - 2x = - 23 - 3
13x = - 26
X = - 2
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