Respuesta :

Answer:

a = 4

Step-by-step explanation:

Add 4 to both sides of the equation:

8 + 4 = 3a - 4 + 4

12 = 3a

Divide both sides by 3:

12 / 3 = 3a / 3

4 = a

Therefore, a = 4.

Explanation:
8= 3a-4
Add 4 to both sides
12=3a
Divide both sides by three
a=4

Answer:
a=4