Respuesta :

You must first set up an equation for this problem.  Your equation is 8+3x=128.  If we subtract 8 from each side we get 3x=120.  If we then divide both sides by 3 we get x=40.  Therefore your number is 40 because 8+3*40=128.
ruqayan427

Answer:

its 40

Step-by-step explanation:

it took the test