F(x)=21x-105

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Solution for F(x)=21x-105 equation: 



(F)=21F-105

We move all terms to the left:

(F)-(21F-105)=0

We get rid of parentheses

F-21F+105=0

We add all the numbers together, and all the variables

-20F+105=0

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

-20F=-105

F=-105/-20

F=5+1/4

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