7u+12=-2(u+3)

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Solution for 7u+12=-2(u+3) equation: 



7u+12=-2(u+3)

We move all terms to the left:

7u+12-(-2(u+3))=0



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

-2(u+3)

We multiply parentheses

-2u-6

Back to the equation:

-(-2u-6)



We get rid of parentheses

7u+2u+6+12=0

We add all the numbers together, and all the variables

9u+18=0

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

9u=-18

u=-18/9

u=-2

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