-105=7(u-9)

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Solution for -105=7(u-9) equation: 



-105=7(u-9)

We move all terms to the left:

-105-(7(u-9))=0



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

7(u-9)

We multiply parentheses

7u-63

Back to the equation:

-(7u-63)



We get rid of parentheses

-7u+63-105=0

We add all the numbers together, and all the variables

-7u-42=0

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

-7u=42

u=42/-7

u=-6

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