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4e-19=-3(3+4)
We move all terms to the left:
4e-19-(-3(3+4))=0
We add all the numbers together, and all the variables
4e-19-(-37)=0
We add all the numbers together, and all the variables
4e+18=0
We move all terms containing e to the left, all other terms to the right
4e=-18
e=-18/4
e=-4+1/2
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