Question

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

Answer 1

Answer:

16a -2ab-2b+9

this is correct answer

Answer 2

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