Ответ:
Пошаговое объяснение:
12x - 18 = 13x + 18
12x - 13x = 18 + 18
-x = 36
x = -36
-15x - 40 = 23 - 8x
-15x + 8x = 23 + 40
-7x = 63
-x = 63:7
x = -9
12x - 18 = 13x + 18 -15x - 40 = 23 - 8x
12x - 13x = 18 + 18 -15x + 8x = 23 + 40
-x = 36 -7x = 63
x = -36 -x = 63:7
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Ответ:
Пошаговое объяснение:
12x - 18 = 13x + 18
12x - 13x = 18 + 18
-x = 36
x = -36
-15x - 40 = 23 - 8x
-15x + 8x = 23 + 40
-7x = 63
-x = 63:7
x = -9
Ответ:
12x - 18 = 13x + 18 -15x - 40 = 23 - 8x
12x - 13x = 18 + 18 -15x + 8x = 23 + 40
-x = 36 -7x = 63
x = -36 -x = 63:7
x = -9