-31=5u+2(u-5)

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Solution for -31=5u+2(u-5) equation: 



-31=5u+2(u-5)

We move all terms to the left:

-31-(5u+2(u-5))=0



We calculate terms in parentheses: -(5u+2(u-5)), so:

5u+2(u-5)

We multiply parentheses

5u+2u-10

We add all the numbers together, and all the variables

7u-10

Back to the equation:

-(7u-10)



We get rid of parentheses

-7u+10-31=0

We add all the numbers together, and all the variables

-7u-21=0

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

-7u=21

u=21/-7

u=-3

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