what should be subtracted from the sum of 5b -4c +a and 2c-3b-4a to get 6a-7b-8c. please solve it is urgent please
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answer is 2a-1b-2c I hope it is helpful
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Answer:
(5b-4c +a) + (2c-3b-4a) - z = 6a-7b -8c therefore z = (5b-4c +a) + (2c-3b-4a) - 6a +7b +8c and there fore we have z= 9b+6c-9a
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