F(x)=21x+21-8

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Solution for F(x)=21x+21-8 equation: 



(F)=21F+21-8

We move all terms to the left:

(F)-(21F+21-8)=0

We add all the numbers together, and all the variables

F-(21F+13)=0

We get rid of parentheses

F-21F-13=0

We add all the numbers together, and all the variables

-20F-13=0

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

-20F=13

F=13/-20

F=-13/20

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