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12.2s+13.8=47.96
We move all terms to the left:
12.2s+13.8-(47.96)=0
We add all the numbers together, and all the variables
12.2s-34.16=0
We move all terms containing s to the left, all other terms to the right
12.2s=34.16
s=34.16/12.2
s=2+2.5957446808511/3.2446808510638
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