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4f+(5-7)=4
We simplify the equation to the form, which is simple to understand
4f+(5-7)=4
Simplifying terms in parentheses
4f+(-2)=4
Remove unnecessary parentheses
+4f-2=+4
We move all terms containing f to the left and all other terms to the right.
+4f=+4+2
We simplify left and right side of the equation.
+4f=+6
We divide both sides of the equation by 4 to get f.
f=1.5
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