6(s+2)-21=9+15s

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Solution for 6(s+2)-21=9+15s equation: 



6(s+2)-21=9+15s

We move all terms to the left:

6(s+2)-21-(9+15s)=0

We add all the numbers together, and all the variables

6(s+2)-(15s+9)-21=0

We multiply parentheses

6s-(15s+9)+12-21=0

We get rid of parentheses

6s-15s-9+12-21=0

We add all the numbers together, and all the variables

-9s-18=0

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

-9s=18

s=18/-9

s=-2

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