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

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



(F)=-2F+F-4

We move all terms to the left:

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

We add all the numbers together, and all the variables

F-(-1F-4)=0

We get rid of parentheses

F+1F+4=0

We add all the numbers together, and all the variables

2F+4=0

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

2F=-4

F=-4/2

F=-2

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