add the following-: a-2c+b,-a+b,6a-4c+b
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6a + 3b - 6c is the sum of the given expression
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Answer:
a-2c+b+(-a+b)+(6a-4c+b)
= a-2c+b-a+b+6a-4c+b
= 6a+3b-6c
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