F(x)=9+3x

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Solution for F(x)=9+3x equation: 



(F)=9+3F

We move all terms to the left:

(F)-(9+3F)=0

We add all the numbers together, and all the variables

F-(3F+9)=0

We get rid of parentheses

F-3F-9=0

We add all the numbers together, and all the variables

-2F-9=0

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

-2F=9

F=9/-2

F=-4+1/2

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