Question

subtract : 4a - 7ab + 3ab + 12 form 12a - ab + 15b - 3...​

Answer 1

Answer:

$4a - 7ab + 12 - 12a - ab + 15b - 3 \\ = 4a + 12a - 7ab + 3ab - ab + 12 - 3 + 15b \\ = 16a - 5ab + 9 + 15b$

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Answer 2

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