Question

From the sum of a+7b of 8a-9, subtract the sum of 11-8a-3b of 6a+4b+12​

Answer 1

Answer:

(a+7b)+(8a-9) = 9a + 7b -9

(11-8a-3b) + (6a+4b+12)= -1-2a+b

(9a+7b-9) - (-1-2a+b) = 7b + 8b - 10

Thank you.