(a) Subtract 4a-7ab + 3b + 12 from 12a-9ab + Sb - 3
(b) Subtract 3xy + Syz - Tex from Soy - 2yz - 2x + 10xyz
c) Subtract 4p'q - 3pq + 5pq? - 8p + 7q - 10 from
18 - 3p-11q+5p9 - 2pq° +5p'q
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(a) (12a-9ab+5b-3)–(4a-7ab+3b+12)
12a-9ab+5b-3 – 4a+7ab-3b-12
12a-4a-9ab+7ab+5b-3b-3-12
8a-2ab+2b-15
More I can't understand
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