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

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



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

We move all terms to the left:

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

We get rid of parentheses

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



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

-2(F+2)-3

We multiply parentheses

-2F-4-3

We add all the numbers together, and all the variables

-2F-7

Back to the equation:

-(-2F-7)



We get rid of parentheses

F+2F+7+2=0

We add all the numbers together, and all the variables

3F+9=0

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

3F=-9

F=-9/3

F=-3

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