Ответ:
Пошаговое объяснение:
8 + 3x + 12 = 15 - 4x - 3
20 + 3х = 12 - 4х
3х + 4х = 12 - 20
7х = -8
х = - 8/7
х = - 1 1/7
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Verified answer
Ответ:
Пошаговое объяснение:
8 + 3x + 12 = 15 - 4x - 3
20 + 3х = 12 - 4х
3х + 4х = 12 - 20
7х = -8
х = - 8/7
х = - 1 1/7