-7u-31=-3(u+5)

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Solution for -7u-31=-3(u+5) equation: 



-7u-31=-3(u+5)

We move all terms to the left:

-7u-31-(-3(u+5))=0



We calculate terms in parentheses: -(-3(u+5)), so:

-3(u+5)

We multiply parentheses

-3u-15

Back to the equation:

-(-3u-15)



We get rid of parentheses

-7u+3u+15-31=0

We add all the numbers together, and all the variables

-4u-16=0

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

-4u=16

u=16/-4

u=-4

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