-20=-3u+5(u+8)

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Solution for -20=-3u+5(u+8) equation: 



-20=-3u+5(u+8)

We move all terms to the left:

-20-(-3u+5(u+8))=0



We calculate terms in parentheses: -(-3u+5(u+8)), so:

-3u+5(u+8)

We multiply parentheses

-3u+5u+40

We add all the numbers together, and all the variables

2u+40

Back to the equation:

-(2u+40)



We get rid of parentheses

-2u-40-20=0

We add all the numbers together, and all the variables

-2u-60=0

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

-2u=60

u=60/-2

u=-30

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