F(x)=2x+6x-20

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Solution for F(x)=2x+6x-20 equation: 



(F)=2F+6F-20

We move all terms to the left:

(F)-(2F+6F-20)=0

We add all the numbers together, and all the variables

F-(8F-20)=0

We get rid of parentheses

F-8F+20=0

We add all the numbers together, and all the variables

-7F+20=0

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

-7F=-20

F=-20/-7

F=2+6/7

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