3e+21=5e+5

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Solution for 3e+21=5e+5 equation: 



3e+21=5e+5

We move all terms to the left:

3e+21-(5e+5)=0

We get rid of parentheses

3e-5e-5+21=0

We add all the numbers together, and all the variables

-2e+16=0

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

-2e=-16

e=-16/-2

e=+8

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