12/2=42/x

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Solution for 12/2=42/x equation: 



12/2=42/x

We move all terms to the left:

12/2-(42/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

-(+42/x)+12/2=0

We add all the numbers together, and all the variables

-(+42/x)+6=0

We get rid of parentheses

-42/x+6=0

We multiply all the terms by the denominator


6*x-42=0

We add all the numbers together, and all the variables

6x-42=0

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

6x=42

x=42/6

x=7

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