2s-7s=9

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Solution for 2s-7s=9 equation: 



2s-7s=9

We move all terms to the left:

2s-7s-(9)=0

We add all the numbers together, and all the variables

-5s-9=0

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

-5s=9

s=9/-5

s=-1+4/5

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