-6u-42=3(u+7)

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Solution for -6u-42=3(u+7) equation: 



-6u-42=3(u+7)

We move all terms to the left:

-6u-42-(3(u+7))=0



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

3(u+7)

We multiply parentheses

3u+21

Back to the equation:

-(3u+21)



We get rid of parentheses

-6u-3u-21-42=0

We add all the numbers together, and all the variables

-9u-63=0

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

-9u=63

u=63/-9

u=-7

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