F(3)=7-8x

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Solution for F(3)=7-8x equation: 



(3)=7-8F

We move all terms to the left:

(3)-(7-8F)=0

We add all the numbers together, and all the variables

-(-8F+7)+3=0

We get rid of parentheses

8F-7+3=0

We add all the numbers together, and all the variables

8F-4=0

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

8F=4

F=4/8

F=1/2

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