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f(3)-1=2(3)-4
We simplify the equation to the form, which is simple to understand
f(3)-1=2(3)-4
Reorder the terms in parentheses
+(+3f)-1=2*(3)-4
Remove unnecessary parentheses
+3f-1=+2+*(+3+)-4
Reorder the terms in parentheses
+3f-1=+(+6)-4
Remove unnecessary parentheses
+3f-1=+6-4
We move all terms containing f to the left and all other terms to the right.
+3f=+6-4+1
We simplify left and right side of the equation.
+3f=+3
We divide both sides of the equation by 3 to get f.
f=1
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