4e+7=2e+21

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Solution for 4e+7=2e+21 equation: 



4e+7=2e+21

We move all terms to the left:

4e+7-(2e+21)=0

We get rid of parentheses

4e-2e-21+7=0

We add all the numbers together, and all the variables

2e-14=0

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

2e=14

e=14/2

e=7

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