2e+5e=42

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Solution for 2e+5e=42 equation: 



2e+5e=42

We move all terms to the left:

2e+5e-(42)=0

We add all the numbers together, and all the variables

7e-42=0

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

7e=42

e=42/7

e=6

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