MatthewCur976398 MatthewCur976398 09-12-2020 Mathematics contestada Simplify by combining like terms. 8a3 + 9t + 7a3 + 6t + 8a2 1. 15a3 + 15t + 8a2 2. 23a3 + 15t 3. 56a3 + 54t + 8a2 4. a3 + 3t + 8a2