Answer:
8x + 9
Step-by-step explanation:
To solve this, you add together the like terms. 2x and 6x are like terms because they have the same variable after each other. 2 + 6 = 8, therefore 2x + 6x = 8x. You cannot add 8x and 9 because they're not like terms, so that's your answer!
Answer: 8x + 9
Hope that helped!
