4e-5=7

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Solution for 4e-5=7 equation: 



4e-5=7

We move all terms to the left:

4e-5-(7)=0

We add all the numbers together, and all the variables

4e-12=0

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

4e=12

e=12/4

e=3

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