-2s-9s=20

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Solution for -2s-9s=20 equation: 



-2s-9s=20

We move all terms to the left:

-2s-9s-(20)=0

We add all the numbers together, and all the variables

-11s-20=0

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

-11s=20

s=20/-11

s=-1+9/11

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