Respuesta :

hkh91

Answer:

[tex] - 2x + 12[/tex]

Step-by-step explanation:

[tex]5(x + 1) - 7(x - 1) \\ = 5x + 5 - 7x + 7 \\ = - 2x + 12[/tex]

Answer:
-2x+12
Explanation