F(x)=31-18x

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Solution for F(x)=31-18x equation: 



(F)=31-18F

We move all terms to the left:

(F)-(31-18F)=0

We add all the numbers together, and all the variables

F-(-18F+31)=0

We get rid of parentheses

F+18F-31=0

We add all the numbers together, and all the variables

19F-31=0

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

19F=31

F=31/19

F=1+12/19

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