Respuesta :
Answer:
5x+8 because 7x-2x=5x and you cant do anything with the 9 so it just stays as a hang on at the end.
Step-by-step explanation:
Answer:
7x + 9 - 2x
We need to combine like terms (meaning terms that have the same power and variables);
(7x - 2x) + (9)
5x + 9
