Respuesta :

Answer:

-3

Step-by-step explanation:

5*(-2 + a) = -25

Use distributive property,

5*(-2) + 5*a = -25

-10 + 5a = -25

Add 10 to both sides

5x = - 25+ 10

5x = -15

Divide both sides by 5

x = -15/5

x = -3