Respuesta :

Answer:

2x + 4

Step-by-step explanation:

You add the x terms together, 7x and -5x, as well as the constants and simplify.

Answer:

2x   +4

Step-by-step explanation:

2+7x+3-5x-1

Put the x terms together and the constants together

7x-5x    +2+3-1

2x   +4