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Question 306238: Solve the formula for f: g = f – v
Answer by PRMath(133)   (Show Source):
You can put this solution on YOUR website! Solve the formula for f: g = f – v
When solving for a variable, ask yourself: How can I isolate the variable?
In this problem, you ask: How can I isolate the "f"? Well... what is going on near the "f"? You can see that there is a "v" that is subtracted from the "f". So... to isolate the "f", let's get rid of that "v". How?
Well, you are subtracting "v" so let's do the opposite: Let's ADD "v" to the equation and if we do it on the right side, we must also do it on the left. Therefore, you have this:
g= f - v (Original equation)
g + v = f - v + v (Add "v" to both sides of the equation)
g + v = f (-v + v = 0, (so to speak) and so, our "f" is now isolated).
THEREFORE: f = g + v
I hope this helps. :-)
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