3=12/u

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Solution for 3=12/u equation: 



3=12/u

We move all terms to the left:

3-(12/u)=0



Domain of the equation: u)!=0

u!=0/1

u!=0

u∈R



We add all the numbers together, and all the variables

-(+12/u)+3=0

We get rid of parentheses

-12/u+3=0

We multiply all the terms by the denominator


3*u-12=0

We add all the numbers together, and all the variables

3u-12=0

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

3u=12

u=12/3

u=4

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