Answer: (CHOICE 4) 6a - 4b + 11
Step-by-step explanation: Lets first combine like terms using the commutative and associative properties.
(8a - 3b + 7) - (2a + b - 4)
Distribute negative sign.
8a - 3b + 7 - 2a - b + 4
Reorder and then combine like terms.
(8a - 2a) + (-3b - b) + (7 + 4)
6a - 4b + 11 (Answer: because it is simplified to a point where it is solved.)