3=-1/9u

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Solution for 3=-1/9u equation: 



3=-1/9u

We move all terms to the left:

3-(-1/9u)=0



Domain of the equation: 9u)!=0

u!=0/1

u!=0

u∈R



We get rid of parentheses

1/9u+3=0

We multiply all the terms by the denominator


3*9u+1=0

Wy multiply elements

27u+1=0

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

27u=-1

u=-1/27

u=-1/27

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