3-9s=9-7s

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



3-9s=9-7s

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We add all the numbers together, and all the variables

-2s-6=0

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

-2s=6

s=6/-2

s=-3

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