Respuesta :

Answer:

9x+1

Step-by-step explanation:

combine like terms

2x+1+7x

9x+1

Answer: 9x + 1

Step-by-step explanation: As 2x and 7x share the same base, they are like terms. So, you can combine them and get 9x. As there are no other constants in the expression, 1 stays the same. Thus, your final answer is 9x + 1.