4e+3-e=30

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Solution for 4e+3-e=30 equation: 



4e+3-e=30

We move all terms to the left:

4e+3-e-(30)=0

We add all the numbers together, and all the variables

3e-27=0

We move all terms containing e to the left, all other terms to the right

3e=27

e=27/3

e=9

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