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0.15-0.2E=0.3E+3.3
We move all terms to the left:
0.15-0.2E-(0.3E+3.3)=0
We get rid of parentheses
-0.2E-0.3E-3.3+0.15=0
We add all the numbers together, and all the variables
-0.5E-3.15=0
We move all terms containing E to the left, all other terms to the right
-0.5E=3.15
E=3.15/-0.5
E=-6+0.15/0.5
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