3=9/u

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Solution for 3=9/u equation: 



3=9/u

We move all terms to the left:

3-(9/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

-(+9/u)+3=0

We get rid of parentheses

-9/u+3=0

We multiply all the terms by the denominator


3*u-9=0

We add all the numbers together, and all the variables

3u-9=0

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

3u=9

u=9/3

u=3

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