-18=3(u+4)-6u

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Solution for -18=3(u+4)-6u equation: 



-18=3(u+4)-6u

We move all terms to the left:

-18-(3(u+4)-6u)=0



We calculate terms in parentheses: -(3(u+4)-6u), so:

3(u+4)-6u

We add all the numbers together, and all the variables

-6u+3(u+4)

We multiply parentheses

-6u+3u+12

We add all the numbers together, and all the variables

-3u+12

Back to the equation:

-(-3u+12)



We get rid of parentheses

3u-12-18=0

We add all the numbers together, and all the variables

3u-30=0

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

3u=30

u=30/3

u=10

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