bjr
5x + 3x = 5x + 3x = (5 + 3)x = 8x [on met x en facteur]
3x - 8x = 3x - 8x = (3 - 8)x = -5x
-4x + 15x = (-4 +15)x = 11x
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bjr
5x + 3x = 5x + 3x = (5 + 3)x = 8x [on met x en facteur]
3x - 8x = 3x - 8x = (3 - 8)x = -5x
-4x + 15x = (-4 +15)x = 11x