12/3=28/x

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Solution for 12/3=28/x equation: 



12/3=28/x

We move all terms to the left:

12/3-(28/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+28/x)+12/3=0

We add all the numbers together, and all the variables

-(+28/x)+4=0

We get rid of parentheses

-28/x+4=0

We multiply all the terms by the denominator


4*x-28=0

We add all the numbers together, and all the variables

4x-28=0

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

4x=28

x=28/4

x=7

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