F(2)=2x-4

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Solution for F(2)=2x-4 equation: 



(2)=2F-4

We move all terms to the left:

(2)-(2F-4)=0

We get rid of parentheses

-2F+4+2=0

We add all the numbers together, and all the variables

-2F+6=0

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

-2F=-6

F=-6/-2

F=+3

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