F(x)=-2x+4x+9

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Solution for F(x)=-2x+4x+9 equation: 



(F)=-2F+4F+9

We move all terms to the left:

(F)-(-2F+4F+9)=0

We add all the numbers together, and all the variables

F-(2F+9)=0

We get rid of parentheses

F-2F-9=0

We add all the numbers together, and all the variables

-1F-9=0

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

-F=9

F=9/-1

F=-9

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