Answer:
17x - 23
Explanation:
5x + 7x - 3 + 10x - 5x -20
5x + 7x + 10x + (-5x) + (-3) + (- 20) **The same, but in a different order**
5x + 7x + 10x + (-5x) = 17x **Combine Like-Terms**
(-3) + (- 20) = -23 **Combine Like-Terms**
Hope I was able to help. Good Luck!