What should be added to 2p + 6 to get 3p – q + 6 ?

1.	What should be added to 2p + 6 to get 3p – q + 6 ?
Answer» Let should be added to (2p + 6) to get 3p – q + 6. (2p + 6) + R = (3p – 9 + 6) R = (3p – q + 6) – (2p + 6) = 3p – q + 6 – 2p – 6 = 3p – 2p – q + 6 – 6 = p – q + 0 Required expression = p – q

Answer»

Let should be added to (2p + 6) to get 3p – q + 6.

(2p + 6) + R = (3p – 9 + 6)
R = (3p – q + 6) – (2p + 6)
= 3p – q + 6 – 2p – 6
= 3p – 2p – q + 6 – 6
= p – q + 0

Required expression = p – q

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