Question

Solve ax − by = f for x.

Answer 1

Your answer is B

The parent function is ax - by = f
So add by to f and you'll get f + by
Then that leaves ax = f + by
You're trying to find x so you divide the f + by and a  and your outcome is
 (f +by) 
Your final answer is x = (f +by) 

Hope this helps! Just ask if you're confused on what I did.