Respuesta :

texaschic101

Answer:

Step-by-step explanation:

3x = 39.....so instead of just subbing in all ur answer choices....just solve for x

3x = 39...divide both sides by 3, cancelling out the 3 on the left side

x = 39/3

x = 13 <=====
The answer is 13 because if you plug in all three of the numbers only 13x3=39