F(n)=-2(n-1)

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Solution for F(n)=-2(n-1) equation: 



(F)=-2(F-1)

We move all terms to the left:

(F)-(-2(F-1))=0



We calculate terms in parentheses: -(-2(F-1)), so:

-2(F-1)

We multiply parentheses

-2F+2

Back to the equation:

-(-2F+2)



We get rid of parentheses

F+2F-2=0

We add all the numbers together, and all the variables

3F-2=0

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

3F=2

F=2/3

F=2/3

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