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(2x - y) = 2x - y (tetep)
(3x + 4y)= 3x + 4y (tetap
- (5x - 5y) = -1 . 5x . + -1 . -5y
= -5x + 5y
Masukkan lagi.
2x - y + 3x + 4y - 5x + 5y
Pisahkan menurut suku sejenis .
2x + 3x - 5x - y + 4y + 5y
= (2+3-5)x + (-1+4+5)y
= 8y