-2u-6=-7(u+3)

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Solution for -2u-6=-7(u+3) equation: 



-2u-6=-7(u+3)

We move all terms to the left:

-2u-6-(-7(u+3))=0



We calculate terms in parentheses: -(-7(u+3)), so:

-7(u+3)

We multiply parentheses

-7u-21

Back to the equation:

-(-7u-21)



We get rid of parentheses

-2u+7u+21-6=0

We add all the numbers together, and all the variables

5u+15=0

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

5u=-15

u=-15/5

u=-3

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