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2 (2p - 3q) = 2 x 2p = 4p --- 2 x -3q = -6q
= 4p - 6q
-5 (3p + q) = -5 x 3p = -15p --- -5 x q = -5q
= -15p - 5q
-15p - 5q - 4p - 6q = -15p - 4p - 5q - 6q
= -19p - 11q
maaf ya aku yang no.2d lupa