F(3)=-2x-6

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Solution for F(3)=-2x-6 equation: 



(3)=-2F-6

We move all terms to the left:

(3)-(-2F-6)=0

We get rid of parentheses

2F+6+3=0

We add all the numbers together, and all the variables

2F+9=0

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

2F=-9

F=-9/2

F=-4+1/2

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