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f+f-6+2(f-6)=722
We simplify the equation to the form, which is simple to understand
f+f-6+2(f-6)=722
Reorder the terms in parentheses
f+f-6+(+2f-12)=722
Remove unnecessary parentheses
+f+f-6+2f-12=+722
We move all terms containing f to the left and all other terms to the right.
+1f+1f+2f=+722+6+12
We simplify left and right side of the equation.
+4f=+740
We divide both sides of the equation by 4 to get f.
f=185
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