3a-2b+5c,2a+5b-7c,-a-b-+c
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Answer:
3a - 2b + 5c +2a + 5b - 7c - a - b + c
= 3a - 2a - a - 2b + 5b - b + 5c - 7c + c
= a - a + 3b - b - 2c + c
= b - c
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Step-by-step explanation:
The above answer is correct.
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