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500=30f+100
We simplify the equation to the form, which is simple to understand
500=30f+100
We move all terms containing f to the left and all other terms to the right.
-30f=+100-500
We simplify left and right side of the equation.
-30f=-400
We divide both sides of the equation by -030 to get f.
f=13.3333333333
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