-3s-9=7(-3s+4)

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Solution for -3s-9=7(-3s+4) equation: 



-3s-9=7(-3s+4)

We move all terms to the left:

-3s-9-(7(-3s+4))=0



We calculate terms in parentheses: -(7(-3s+4)), so:

7(-3s+4)

We multiply parentheses

-21s+28

Back to the equation:

-(-21s+28)



We get rid of parentheses

-3s+21s-28-9=0

We add all the numbers together, and all the variables

18s-37=0

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

18s=37

s=37/18

s=2+1/18

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