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f(-25)=-3(-25)+2
We simplify the equation to the form, which is simple to understand
f(-25)=-3(-25)+2
Reorder the terms in parentheses
+(-25f)=-3*(-25)+2
Remove unnecessary parentheses
-25f=-3+*(-25+)+2
Reorder the terms in parentheses
-25f=+(+75)+2
Remove unnecessary parentheses
-25f=+75+2
We move all terms containing f to the left and all other terms to the right.
-25f=+75+2
We simplify left and right side of the equation.
-25f=+77
We divide both sides of the equation by -25 to get f.
f=-3.08
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