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2f-35=f+81
We simplify the equation to the form, which is simple to understand
2f-35=f+81
We move all terms containing f to the left and all other terms to the right.
+2f-1f=+81+35
We simplify left and right side of the equation.
+1f=+116
We divide both sides of the equation by 1 to get f.
f=116
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