3s+9=9-7s

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Solution for 3s+9=9-7s equation: 



3s+9=9-7s

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

3s+7s-9+9=0

We add all the numbers together, and all the variables

10s=0

s=0/10

s=0

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