F(x)=4x+3x-20

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Solution for F(x)=4x+3x-20 equation: 



(F)=4F+3F-20

We move all terms to the left:

(F)-(4F+3F-20)=0

We add all the numbers together, and all the variables

F-(7F-20)=0

We get rid of parentheses

F-7F+20=0

We add all the numbers together, and all the variables

-6F+20=0

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

-6F=-20

F=-20/-6

F=3+1/3

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