F(x)=x-2(x+1)

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Solution for F(x)=x-2(x+1) equation: 



(F)=F-2(F+1)

We move all terms to the left:

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



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

F-2(F+1)

We multiply parentheses

F-2F-2

We add all the numbers together, and all the variables

-1F-2

Back to the equation:

-(-1F-2)



We get rid of parentheses

F+1F+2=0

We add all the numbers together, and all the variables

2F+2=0

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

2F=-2

F=-2/2

F=-1

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