Sagot :
Add the A's together
8a + 12a - 2a
20a - 2a
18a
Add the B"s together
-2b - 4b
-6b
The final answer will be 18a - 6b
8a + 12a - 2a
20a - 2a
18a
Add the B"s together
-2b - 4b
-6b
The final answer will be 18a - 6b