6u-21=(9u+1)

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Solution for 6u-21=(9u+1) equation: 



6u-21=(9u+1)

We move all terms to the left:

6u-21-((9u+1))=0



We calculate terms in parentheses: -((9u+1)), so:

(9u+1)

We get rid of parentheses

9u+1

Back to the equation:

-(9u+1)



We get rid of parentheses

6u-9u-1-21=0

We add all the numbers together, and all the variables

-3u-22=0

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

-3u=22

u=22/-3

u=-7+1/3

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