F(x)=9+2x

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Solution for F(x)=9+2x equation: 



(F)=9+2F

We move all terms to the left:

(F)-(9+2F)=0

We add all the numbers together, and all the variables

F-(2F+9)=0

We get rid of parentheses

F-2F-9=0

We add all the numbers together, and all the variables

-1F-9=0

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

-F=9

F=9/-1

F=-9

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