F(x)=x-4/2x-9

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Solution for F(x)=x-4/2x-9 equation: 



(F)=F-4/2F-9

We move all terms to the left:

(F)-(F-4/2F-9)=0



Domain of the equation: 2F-9)!=0

F∈R



We get rid of parentheses

F-F+4/2F+9=0

We multiply all the terms by the denominator


F*2F-F*2F+9*2F+4=0

Wy multiply elements

2F^2-2F^2+18F+4=0

We add all the numbers together, and all the variables

18F+4=0

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

18F=-4

F=-4/18

F=-2/9

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