3s=9+4s

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Solution for 3s=9+4s equation: 



3s=9+4s

We move all terms to the left:

3s-(9+4s)=0

We add all the numbers together, and all the variables

3s-(4s+9)=0

We get rid of parentheses

3s-4s-9=0

We add all the numbers together, and all the variables

-1s-9=0

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

-s=9

s=9/-1

s=-9

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