Question

What should be subtracted from 5a + 4b + 12 to get - 4a + 2b + 19?​

Answer 1

Answer:

The answer is 9a+2b-7 should be subtracted from 5a + 4b + 12 to get - 4a + 2b + 19

Answer 2

Answer:

5a+4b+12 -(x) = -4a +2b +19

-(x) = -9a-2b+7

-(x) = -(9a +2b-7)

x = 9a+2b-7