-31=-8u+3(u-2)

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Solution for -31=-8u+3(u-2) equation: 



-31=-8u+3(u-2)

We move all terms to the left:

-31-(-8u+3(u-2))=0



We calculate terms in parentheses: -(-8u+3(u-2)), so:

-8u+3(u-2)

We multiply parentheses

-8u+3u-6

We add all the numbers together, and all the variables

-5u-6

Back to the equation:

-(-5u-6)



We get rid of parentheses

5u+6-31=0

We add all the numbers together, and all the variables

5u-25=0

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

5u=25

u=25/5

u=5

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