9=9+u/2

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Solution for 9=9+u/2 equation: 



9=9+u/2

We move all terms to the left:

9-(9+u/2)=0

We add all the numbers together, and all the variables

-(u/2+9)+9=0

We get rid of parentheses

-u/2-9+9=0

We multiply all the terms by the denominator


-u-9*2+9*2=0

We add all the numbers together, and all the variables

-u=0

u=0/-1

u=0

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