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f(3)=4(3)-7
We simplify the equation to the form, which is simple to understand
f(3)=4(3)-7
Reorder the terms in parentheses
+(+3f)=4*(3)-7
Remove unnecessary parentheses
+3f=+4+*(+3+)-7
Reorder the terms in parentheses
+3f=+(+12)-7
Remove unnecessary parentheses
+3f=+12-7
We move all terms containing f to the left and all other terms to the right.
+3f=+12-7
We simplify left and right side of the equation.
+3f=+5
We divide both sides of the equation by 3 to get f.
f=1.6666666666667
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