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-5.6e+12.9=-1.3e
We move all terms to the left:
-5.6e+12.9-(-1.3e)=0
We get rid of parentheses
-5.6e+1.3e+12.9=0
We add all the numbers together, and all the variables
-4.3e+12.9=0
We move all terms containing e to the left, all other terms to the right
-4.3e=-12.9
e=-12.9/-4.3
e=3+1.7763568394003E-15/4.3
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