Question

please solve these problems
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Answer 1

(12a - 9ab + 5b - 3) - (4a - 7ab + 3b + 12)

12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12

8a - 2ab + 2b - 15

(5xy - 2yz - 2zx + 10xyz) - (3xy + 5yz - 7zx)

5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx

2xy - 7yz + 5zx + 10xyz

(18-3p-11q+5pq-2pq²+5p²q) - (4p²q-3pq+5pq²-8p+7q-10)

18-3p-11q+5pq-2pq²+5p²q - 4p²q+3pq-5pq²+8p-7q+10

28 + 5p - 18q + 8pq - 7pq² + p²q

Answer 2

Answer:

(12a-9ab+5b-3)-(4a-7ab+3b+12)