Simplify the following expression. What is the coefficient in the simplified expression?

Answer:
5x + 9
Step-by-step explanation:
3x + 2 - 3x + 7 + 5x = 5x + 9
Steps
3x - 3x + 5x + 2 + 7
2. Add similar elements: 3x - 3x + 5x = 5x
5x + 2 + 7
3. Add the numbers: 2+7=9
5x + 9