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5e-4=2e+1
We move all terms to the left:
5e-4-(2e+1)=0
We get rid of parentheses
5e-2e-1-4=0
We add all the numbers together, and all the variables
3e-5=0
We move all terms containing e to the left, all other terms to the right
3e=5
e=5/3
e=1+2/3
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