Subtract 4a-7ab+ 3b+ 12 from 12a-9ab+5b- 3
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Answer:
-8a+2ab-2b+15
Step-by-step explanation:
- 4a-7ab+3b+12
- 12a-9ab+5b-3
____________________
(4-12)a+(-7--9)ab+(3-5)b+(12--3)
-8a+(-7+9)ab-2b+15
-8a+2ab-2b+15
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