Subtract
3a-5b +2c - 9 from 2a-4b - 7c + 3
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Step-by-step explanation:
3a-5b +2c - 9 -(2a-4b - 7c + 3)
3a-5b +2c - 9 -2a + 4b +7c - 3
3a-2a -5b+4b +2c+7c -9-3
a - 1b +9c -12 ( answer)
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