f(-1)=5(-1)-4(-1)+2

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Solution for f(-1)=5(-1)-4(-1)+2 equation:


f(-1)=5(-1)-4(-1)+2

We simplify the equation to the form, which is simple to understand 
f(-1)=5(-1)-4(-1)+2

Reorder the terms in parentheses
+(-1f)=5*(-1)-4*(-1)+2

Remove unnecessary parentheses
-1f=+5+*(-1+)-4+*(-1+)+2

Reorder the terms in parentheses
-1f=+(-5)-4*(-1)+2

Remove unnecessary parentheses
-1f=-5-4+*(-1+)+2

Reorder the terms in parentheses
-1f=-5+(+4)+2

Remove unnecessary parentheses
-1f=-5+4+2

We move all terms containing f to the left and all other terms to the right. 
-1f=-5+4+2

We simplify left and right side of the equation. 
-1f=+1

We divide both sides of the equation by -1 to get f. 
f=-1

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