-31=5(4s-9)

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Solution for -31=5(4s-9) equation: 



-31=5(4s-9)

We move all terms to the left:

-31-(5(4s-9))=0



We calculate terms in parentheses: -(5(4s-9)), so:

5(4s-9)

We multiply parentheses

20s-45

Back to the equation:

-(20s-45)



We get rid of parentheses

-20s+45-31=0

We add all the numbers together, and all the variables

-20s+14=0

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

-20s=-14

s=-14/-20

s=7/10

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