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2e-1=5e-8
We move all terms to the left:
2e-1-(5e-8)=0
We get rid of parentheses
2e-5e+8-1=0
We add all the numbers together, and all the variables
-3e+7=0
We move all terms containing e to the left, all other terms to the right
-3e=-7
e=-7/-3
e=2+1/3
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