F(x)=3(-2x+7)

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Solution for F(x)=3(-2x+7) equation: 



(F)=3(-2F+7)

We move all terms to the left:

(F)-(3(-2F+7))=0



We calculate terms in parentheses: -(3(-2F+7)), so:

3(-2F+7)

We multiply parentheses

-6F+21

Back to the equation:

-(-6F+21)



We get rid of parentheses

F+6F-21=0

We add all the numbers together, and all the variables

7F-21=0

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

7F=21

F=21/7

F=3

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