9=-3(u-19)

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Solution for 9=-3(u-19) equation: 



9=-3(u-19)

We move all terms to the left:

9-(-3(u-19))=0



We calculate terms in parentheses: -(-3(u-19)), so:

-3(u-19)

We multiply parentheses

-3u+57

Back to the equation:

-(-3u+57)



We get rid of parentheses

3u-57+9=0

We add all the numbers together, and all the variables

3u-48=0

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

3u=48

u=48/3

u=16

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