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Addition of Unlike Terms

5x + 4y + 6pq...

Question

5x + 4y + 6pq - 2y + 3x + 4xy - 3pq - 2xy is equal to: [2 MARKS]

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Solution

Steps: 1 Mark
Answer: 1 Mark

Like terms can be added and subtracted.

So, $5 x + 3 x = 8 x$

Similarly, $4 y - 2 y = 2 y$

$4 x y - 2 x y = 2 x y$

$6 p q - 3 p q = 3 p q$
$\Rightarrow 5 x + 4 y + 6 p q - 2 y + 3 x + 4 x y - 3 p q - 2 x y$

= $8 x + 2 y + 2 x y + 3 p q$

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