Odpowiedź:
-12x-3*3x=-9x-12=-21x
(6x - 12 /6) - 18 - 54x /-18 = x - 2 + 1 + 3 = x + 2
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Odpowiedź:
-12x-3*3x=-9x-12=-21x
(6x - 12 /6) - 18 - 54x /-18 = x - 2 + 1 + 3 = x + 2