Answer
Option A is correct.
-7a + 3a - a - 12 + 4a = -a - 12
Explanation
The question asks us to simplify the given expression.
To do that, we will collect like terms, that is, bring the terms with a together, seperate from the one(s) that don't
-7a + 3a - a - 12 + 4a
= -7a + 3a - a + 4a - 12
= -a - 12
Hope this Helps!!!
