When we add 5 a 2 b + 6 a b + 7 b c + 54 and 14 a b + 8 b c + 16 , we get: Options: A . &nbsp5a2b+20ab+7bc+70 B . &nbsp5a2b+6ab+7bc+8ac+70 C . &nbsp5a2b+16ab+7bc+8ac+70 D . &nbsp5a2b+20ab+15bc+70

Answer: Option D : D 5 a 2 b + 6 a b + 7 b c + 54 14 a b + 8 b c + 16 ________________________________ 5 a 2 b + 20 a b + 15 b c + 70

When we add 5a2b+6ab+7bc+54 and 14ab+8bc+16, we get:

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