Respuesta :

Yang100

Answer:

6

Step-by-step explanation:

-2a+9=-3

-2a=-3-9

-2a=-12

2a=12

a=12/2

a=6

Answer:

a = 6

Step-by-step explanation:

-2a + 9 = -3

Subtract 9 from both sides,

-2a = -12

Divide -2 on both sides  (Negatives cancel out)

a = 6

Hope this helped :)