F(4)=1/2x+9

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Solution for F(4)=1/2x+9 equation: 



(4)=1/2F+9

We move all terms to the left:

(4)-(1/2F+9)=0



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

F∈R



We get rid of parentheses

-1/2F-9+4=0

We multiply all the terms by the denominator


-9*2F+4*2F-1=0

Wy multiply elements

-18F+8F-1=0

We add all the numbers together, and all the variables

-10F-1=0

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

-10F=1

F=1/-10

F=-1/10

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