F(-1)=2x-4

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Solution for F(-1)=2x-4 equation: 



(-1)=2F-4

We move all terms to the left:

(-1)-(2F-4)=0

We add all the numbers together, and all the variables

-(2F-4)-1=0

We get rid of parentheses

-2F+4-1=0

We add all the numbers together, and all the variables

-2F+3=0

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

-2F=-3

F=-3/-2

F=1+1/2

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