Add 3a-2b+5c, 2a+5b-7c, -a -b +c
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0
Answer:
4a +2b -c
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Answer:
3a - 2b + 5c + 2a + 5b - 7c +(- a - b + c)
3a + 2a - a - 2b + 5b - b + 5c - 7c + c
4a + 2b - c
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