239=15-u

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Solution for 239=15-u equation: 



239=15-u

We move all terms to the left:

239-(15-u)=0

We add all the numbers together, and all the variables

-(-1u+15)+239=0

We get rid of parentheses

1u-15+239=0

We add all the numbers together, and all the variables

u+224=0

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

u=-224

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