Help need to get done by tomorrow

Answer:
13a-3
Step-by-step explanation:
7a-(4a-8a+3)+2a First, distribute the negative 1.
7a-4a+8a-3+2a Combine like terms.
13a-3
Answer:
Step-by-step explanation:
7a - (4a - 8a + 3) + 2a
= 7a - 4a - (-8a) - 3 + 2a
= 7a - 4a + 8a - 3 + 2a combine like terms
= (7a - 4a + 8a + 2a) - 3
= (7 - 4 + 8 + 2)a - 3
= 13a - 3