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5p + 5
b. 9m + 4mn + (-12m) - 7mn
-3m - 3mn
c. 2(-8a - 3b) -4a + 9b
-16a -6b -4a +9b
-20a + 3b
d. -3(4k^l + 3kl^) + 2(-9k^l - 4kl^)
-12k^l -9kl^ -18k^l -8kl^
-30k^l -17kl^