F(-2)=4x-20

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Solution for F(-2)=4x-20 equation: 



(-2)=4F-20

We move all terms to the left:

(-2)-(4F-20)=0

We add all the numbers together, and all the variables

-(4F-20)-2=0

We get rid of parentheses

-4F+20-2=0

We add all the numbers together, and all the variables

-4F+18=0

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

-4F=-18

F=-18/-4

F=4+1/2

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