Question

What should be subtracted from 3p - 8q + 18 so that the answer would -2q + 2p - 9.

Answer 1

The number should be subtracted is_

(3p-8q+18) - (-2q +2p -9)

= 3p -8q + 18 + 2q - 2p +9

= 3p -2p -8q+2q+18+9

= p-6q+27

(Ans): p-6q+27