-21-9s=-3(6s+8)

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Solution for -21-9s=-3(6s+8) equation: 



-21-9s=-3(6s+8)

We move all terms to the left:

-21-9s-(-3(6s+8))=0



We calculate terms in parentheses: -(-3(6s+8)), so:

-3(6s+8)

We multiply parentheses

-18s-24

Back to the equation:

-(-18s-24)



We get rid of parentheses

-9s+18s+24-21=0

We add all the numbers together, and all the variables

9s+3=0

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

9s=-3

s=-3/9

s=-1/3

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