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5-2s=-2.78
We move all terms to the left:
5-2s-(-2.78)=0
We add all the numbers together, and all the variables
-2s+7.78=0
We move all terms containing s to the left, all other terms to the right
-2s=-7.78
s=-7.78/-2
s=3+1/1.123595505618
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