3=-1/u-3

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Solution for 3=-1/u-3 equation: 



3=-1/u-3

We move all terms to the left:

3-(-1/u-3)=0



Domain of the equation: u-3)!=0

u∈R



We get rid of parentheses

1/u+3+3=0

We multiply all the terms by the denominator


3*u+3*u+1=0

We add all the numbers together, and all the variables

6u+1=0

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

6u=-1

u=-1/6

u=-1/6

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