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1-2e-2=3-12e-20
We simplify the equation to the form, which is simple to understand
1-2e-2=3-12e-20
We move all terms containing e to the left and all other terms to the right.
-2e+12e=+3-20-1+2
We simplify left and right side of the equation.
+10e=-16
We divide both sides of the equation by 10 to get e.
e=-1.6
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