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

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



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

We move all terms to the left:

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



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

-3(u-3)

We multiply parentheses

-3u+9

Back to the equation:

-(-3u+9)



We get rid of parentheses

3u+3u-9-9=0

We add all the numbers together, and all the variables

6u-18=0

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

6u=18

u=18/6

u=3

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