7s+3=9s+9-s

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



7s+3=9s+9-s

We move all terms to the left:

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

We add all the numbers together, and all the variables

7s-(8s+9)+3=0

We get rid of parentheses

7s-8s-9+3=0

We add all the numbers together, and all the variables

-1s-6=0

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

-s=6

s=6/-1

s=-6

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