-9u+9=9(u+7)

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Solution for -9u+9=9(u+7) equation: 



-9u+9=9(u+7)

We move all terms to the left:

-9u+9-(9(u+7))=0



We calculate terms in parentheses: -(9(u+7)), so:

9(u+7)

We multiply parentheses

9u+63

Back to the equation:

-(9u+63)



We get rid of parentheses

-9u-9u-63+9=0

We add all the numbers together, and all the variables

-18u-54=0

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

-18u=54

u=54/-18

u=-3

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