-9u-12=-3(u-2)

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Solution for -9u-12=-3(u-2) equation: 



-9u-12=-3(u-2)

We move all terms to the left:

-9u-12-(-3(u-2))=0



We calculate terms in parentheses: -(-3(u-2)), so:

-3(u-2)

We multiply parentheses

-3u+6

Back to the equation:

-(-3u+6)



We get rid of parentheses

-9u+3u-6-12=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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