-9u-31=2(u+1)

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Solution for -9u-31=2(u+1) equation: 



-9u-31=2(u+1)

We move all terms to the left:

-9u-31-(2(u+1))=0



We calculate terms in parentheses: -(2(u+1)), so:

2(u+1)

We multiply parentheses

2u+2

Back to the equation:

-(2u+2)



We get rid of parentheses

-9u-2u-2-31=0

We add all the numbers together, and all the variables

-11u-33=0

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

-11u=33

u=33/-11

u=-3

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