-9=-3+u/3

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



-9=-3+u/3

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

-u/3+3-9=0

We multiply all the terms by the denominator


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

We add all the numbers together, and all the variables

-1u-18=0

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

-u=18

u=18/-1

u=-18

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