42=-(u/9)

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Solution for 42=-(u/9) equation: 



42=-(u/9)

We move all terms to the left:

42-(-(u/9))=0

We add all the numbers together, and all the variables

-(-(+u/9))+42=0

We multiply all the terms by the denominator


-(-(+u+42*9))=0



We calculate terms in parentheses: -(-(+u+42*9)), so:

-(+u+42*9)

We add all the numbers together, and all the variables

-(u+378)

We get rid of parentheses

-u-378

We add all the numbers together, and all the variables

-1u-378

Back to the equation:

-(-1u-378)



We get rid of parentheses

1u+378=0

We add all the numbers together, and all the variables

u+378=0

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

u=-378

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