F(x)=5x-420

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Solution for F(x)=5x-420 equation: 



(F)=5F-420

We move all terms to the left:

(F)-(5F-420)=0

We get rid of parentheses

F-5F+420=0

We add all the numbers together, and all the variables

-4F+420=0

We move all terms containing F to the left, all other terms to the right

-4F=-420

F=-420/-4

F=+105

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