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3f-5f-4=2
We simplify the equation to the form, which is simple to understand
3f-5f-4=2
We move all terms containing f to the left and all other terms to the right.
+3f-5f=+2+4
We simplify left and right side of the equation.
-2f=+6
We divide both sides of the equation by -2 to get f.
f=-3
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