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13-4f=16
We simplify the equation to the form, which is simple to understand
13-4f=16
We move all terms containing f to the left and all other terms to the right.
-4f=+16-13
We simplify left and right side of the equation.
-4f=+3
We divide both sides of the equation by -4 to get f.
f=-0.75
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