Solve S = 3f - 12 for f.

Question

Solve S = 3f - 12 for f.

Choose one answer. just give me an explanation and the ANSWER I just need to check my own.

A. f = S+3/12
 

B. f = S+12/3
 

C. f = S + 12
 

D. f = S - 12

Answer 1

This is asking you to manipulate the equation to isolate f by itself. 

 

First move the -12 to the other side of the equation to get

 

S + 12 = 3f

 

Then divide both sides of the equation by 3: 

 

S + 12   = f

    3

 

so that's choice B