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

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



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

We move all terms to the left:

-3-(-6u+3(u+3))=0



We calculate terms in parentheses: -(-6u+3(u+3)), so:

-6u+3(u+3)

We multiply parentheses

-6u+3u+9

We add all the numbers together, and all the variables

-3u+9

Back to the equation:

-(-3u+9)



We get rid of parentheses

3u-9-3=0

We add all the numbers together, and all the variables

3u-12=0

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

3u=12

u=12/3

u=4

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