6u+45=-3(u+3)

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Solution for 6u+45=-3(u+3) equation: 



6u+45=-3(u+3)

We move all terms to the left:

6u+45-(-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

6u+3u+9+45=0

We add all the numbers together, and all the variables

9u+54=0

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

9u=-54

u=-54/9

u=-6

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