f(3)=-18

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Solution for f(3)=-18 equation:


f(3)=-18

We simplify the equation to the form, which is simple to understand 
f(3)=-18

Reorder the terms in parentheses
+(+3f)=-18

Remove unnecessary parentheses
+3f=-18

We move all terms containing f to the left and all other terms to the right. 
+3f=-18

We simplify left and right side of the equation. 
+3f=-18

We divide both sides of the equation by 3 to get f. 
f=-6

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