Answer: the answer is -8a-7b-7c
Explanation:
See attachment
Answer:
-8a - 7b - 7c
-8a - 2b - 10c - (5b - 3c)
Negate 5b and -3c
-8a - 2b - 10c - 5b + 3c = -8a - 7b - 7c
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