Sederhanakan:2x + 3xy – 4y + 8x – 4y – 4xy​

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2x + 3xy – 4y + 8x – 4y – 4xy

(2 + 8)x + (3 – 4)xy – (4 + 4)y

10x + (-1)xy – 8y

10x – xy – 8y

2x + 3xy – 4y + 8x – 4y – 4xy =

= (2x + 8x) + (3xy – 4xy) + (-4y – 4y)

= (2 + 8)x + (3 – 4)xy + (-4 – 4)y

= 10x – xy – 8y