Answer:
26-10a
Explanation:
Question : 23 - 7a + - (3a - 3)
1. Remove the parenthesis - When there is a "-" in front of the parenthesis, change the sign of each term in parenthesis
23-7a-3a+3
2. Add the numbers that you have - 23 and 3
23 - 7a - 3a + 3 ------
26-7a-3a
3. Collect the like terms - 7a and 3a
26 - 7a - 3a
26 - 10a
Your simplified answer is 26 - 10a