12/4=x/(x-3)

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Solution for 12/4=x/(x-3) equation: 



12/4=x/(x-3)

We move all terms to the left:

12/4-(x/(x-3))=0



Domain of the equation: (x-3))!=0

x∈R



We add all the numbers together, and all the variables

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

We multiply all the terms by the denominator


-(x+3*(x-3))=0



We calculate terms in parentheses: -(x+3*(x-3)), so:

x+3*(x-3)

We multiply parentheses

x+3x-9

We add all the numbers together, and all the variables

4x-9

Back to the equation:

-(4x-9)



We get rid of parentheses

-4x+9=0

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

-4x=-9

x=-9/-4

x=2+1/4

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