4y - (3x - 6y) - (y + 6x) = 4y - 3x + 6y - y - 6x = -9x + 9y
Zadanie
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4y - (3x - 6y) - (y + 6x) = 4y - 3x + 6y - y - 6x = -9x + 9y
Zadanie
4y - (3x - 6y) - (y + 6x) = 4y - 3x + 6y - y - 6x = -9x + 9y