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9.999999=999999998e+31
We move all terms to the left:
9.999999-(999999998e+31)=0
We get rid of parentheses
-999999998e-31+9.999999=0
We add all the numbers together, and all the variables
-999999998e-21.000001=0
We move all terms containing e to the left, all other terms to the right
-999999998e=21.000001
e=21.000001/-999999998
e=-20.99998000002/999998998.001
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