1) Subtract 4a-7ab+3b+12 from 12a-9ab+5b-3
2) Subtract 3xy+5yz-7zx from 5xy-2yz-2zx+10xyz
3) Subtract 4p^2q-3pq+5pq^2-8q+7q-10 from 18-3p-21q+5pq-2pq^2-5p^2q
please help me first
Answers
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Answer:
1) 8a -2ab+ 2b-15
2) 2xy-7yz+5zx+10 xyz
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