9u-45=-9(u-3)

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Solution for 9u-45=-9(u-3) equation: 



9u-45=-9(u-3)

We move all terms to the left:

9u-45-(-9(u-3))=0



We calculate terms in parentheses: -(-9(u-3)), so:

-9(u-3)

We multiply parentheses

-9u+27

Back to the equation:

-(-9u+27)



We get rid of parentheses

9u+9u-27-45=0

We add all the numbers together, and all the variables

18u-72=0

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

18u=72

u=72/18

u=4

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