F(x)=20-2x

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Solution for F(x)=20-2x equation: 



(F)=20-2F

We move all terms to the left:

(F)-(20-2F)=0

We add all the numbers together, and all the variables

F-(-2F+20)=0

We get rid of parentheses

F+2F-20=0

We add all the numbers together, and all the variables

3F-20=0

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

3F=20

F=20/3

F=6+2/3

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