We can solve this through steps:
1. Rewrite
5x + 7 + 3(x - 7)
2. Distribute
5x + 7 + 3x - 21
3. Combine like terms
8x - 14
This answer was received through distribution and combining like terms. Once the terms are distributed, all that is left to do is combine like terms. After that, we receive our answer.
