-3u-21=2(u-8)

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Solution for -3u-21=2(u-8) equation: 



-3u-21=2(u-8)

We move all terms to the left:

-3u-21-(2(u-8))=0



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

2(u-8)

We multiply parentheses

2u-16

Back to the equation:

-(2u-16)



We get rid of parentheses

-3u-2u+16-21=0

We add all the numbers together, and all the variables

-5u-5=0

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

-5u=5

u=5/-5

u=-1

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