81=9(3s-5)

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Solution for 81=9(3s-5) equation: 



81=9(3s-5)

We move all terms to the left:

81-(9(3s-5))=0



We calculate terms in parentheses: -(9(3s-5)), so:

9(3s-5)

We multiply parentheses

27s-45

Back to the equation:

-(27s-45)



We get rid of parentheses

-27s+45+81=0

We add all the numbers together, and all the variables

-27s+126=0

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

-27s=-126

s=-126/-27

s=4+2/3

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