2s+9=20

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Solution for 2s+9=20 equation: 



2s+9=20

We move all terms to the left:

2s+9-(20)=0

We add all the numbers together, and all the variables

2s-11=0

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

2s=11

s=11/2

s=5+1/2

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