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-4(1-4e)=124
We move all terms to the left:
-4(1-4e)-(124)=0
We add all the numbers together, and all the variables
-4(-4e+1)-124=0
We multiply parentheses
16e-4-124=0
We add all the numbers together, and all the variables
16e-128=0
We move all terms containing e to the left, all other terms to the right
16e=128
e=128/16
e=8
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