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4-7f=7-12
We simplify the equation to the form, which is simple to understand
4-7f=7-12
We move all terms containing f to the left and all other terms to the right.
-7f=+7-12-4
We simplify left and right side of the equation.
-7f=-9
We divide both sides of the equation by -7 to get f.
f=1.28571428571
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