Question

(a) Subtract 4a – 7ab + 3b + 12 from 12a - 9ab + 5b - 3
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Answer 1

Answer:

1. 8a-2ab+2b-15

Step-by-step explanation:

we should write first 12a-9ab+5b-3 and subtract to 4a-7ab+3b12

Answer 2

$(12a – 9ab + 5b – 3) – (4a – 7ab + 3b + 12) \\ =  12a – 9ab + 5b – 3 – 4a + 7ab – 3b – 12 \\ =12a – 4a -9ab + 7ab +5b – 3b -3 -12 \\ = 8a – 2ab + 2b – 15$