3(1 - x) + 2 = -7
3 - 3x + 2 = -7
-3x = -7 - 3 - 2
-3x = -12 | : (-3)
x = 4
(x - 7) - 2(3x + 5) = 3
x - 7 - 6x - 10 = 3
x - 6x = 3 + 7 + 10
-5x = 20 | : (-5)
x = -4
Odpowiedź:
Szczegółowe wyjaśnienie:
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3(1 - x) + 2 = -7
3 - 3x + 2 = -7
-3x = -7 - 3 - 2
-3x = -12 | : (-3)
x = 4
(x - 7) - 2(3x + 5) = 3
x - 7 - 6x - 10 = 3
x - 6x = 3 + 7 + 10
-5x = 20 | : (-5)
x = -4
Odpowiedź:
Szczegółowe wyjaśnienie: