3=-7/9+u

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Solution for 3=-7/9+u equation: 



3=-7/9+u

We move all terms to the left:

3-(-7/9+u)=0



Domain of the equation: 9+u)!=0

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

u)!=-9

u!=-9/1

u!=-9

u∈R



We add all the numbers together, and all the variables

-(+u-7/9)+3=0

We get rid of parentheses

-u+3+7/9=0

We multiply all the terms by the denominator


-u*9+7+3*9=0

We add all the numbers together, and all the variables

-u*9+34=0

Wy multiply elements

-9u+34=0

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

-9u=-34

u=-34/-9

u=3+7/9

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