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f(-11)=11+8
We simplify the equation to the form, which is simple to understand
f(-11)=11+8
Reorder the terms in parentheses
+(-11f)=11+8
Remove unnecessary parentheses
-11f=+11+8
We move all terms containing f to the left and all other terms to the right.
-11f=+11+8
We simplify left and right side of the equation.
-11f=+19
We divide both sides of the equation by -11 to get f.
f=-1.72727272727
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