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8e+14=9e+4
We move all terms to the left:
8e+14-(9e+4)=0
We get rid of parentheses
8e-9e-4+14=0
We add all the numbers together, and all the variables
-1e+10=0
We move all terms containing e to the left, all other terms to the right
-e=-10
e=-10/-1
e=+10
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