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6x - 3y - 5x + 5y
6x - 5x -3y + 5y
x + 2y
3(2X - y ) - 5 (x-y)
= 3.2x - 3y - 5x + 5y
= 6x - 3y - 5x + 5y
= 6x - 5x - 3y - 5y
= x - 8y
begitu