Respuesta :

sydneyos

Answer:

-10

Step-by-step explanation:

7 + 7(-4) - (2(-4)) + 3

7 - 28 - (-8)+3

7 - 28 +8 +3

= -10

mhanifa

Answer:

  • - 10

Step-by-step explanation:

  • 7 + 7x - (2x) + 3 =
  • 7 + 7x - 2x + 3 =
  • 10 + 5x =
  • 10 + 5*(- 4) =                     Substitute x = - 4
  • 10 - 20 =
  • - 10