9-7s=-3(s+12)

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Solution for 9-7s=-3(s+12) equation: 



9-7s=-3(s+12)

We move all terms to the left:

9-7s-(-3(s+12))=0



We calculate terms in parentheses: -(-3(s+12)), so:

-3(s+12)

We multiply parentheses

-3s-36

Back to the equation:

-(-3s-36)



We get rid of parentheses

-7s+3s+36+9=0

We add all the numbers together, and all the variables

-4s+45=0

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

-4s=-45

s=-45/-4

s=11+1/4

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