12=-6(7+u)

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Solution for 12=-6(7+u) equation: 



12=-6(7+u)

We move all terms to the left:

12-(-6(7+u))=0

We add all the numbers together, and all the variables

-(-6(u+7))+12=0



We calculate terms in parentheses: -(-6(u+7)), so:

-6(u+7)

We multiply parentheses

-6u-42

Back to the equation:

-(-6u-42)



We get rid of parentheses

6u+42+12=0

We add all the numbers together, and all the variables

6u+54=0

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

6u=-54

u=-54/6

u=-9

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