a math problem that i need help with

Question

The equation f = v + at represents the final velocity of an object, f, with an initial velocity, v, and an acceleration rate, a, over time, t. Which is an equivalent equation solved for a?

 = a

– v = a

 = a

+ v = a

Answer 1

(f-v)/t = a

the first choice is correct

f=v+at

subtract v from both sides to get

f-v = at

then divide both sides by t to get

(f-v)/t = a