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6+f=2f+3
We simplify the equation to the form, which is simple to understand
6+f=2f+3
We move all terms containing f to the left and all other terms to the right.
+1f-2f=+3-6
We simplify left and right side of the equation.
-1f=-3
We divide both sides of the equation by -1 to get f.
f=3
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