4=7+2e

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Solution for 4=7+2e equation: 



4=7+2e

We move all terms to the left:

4-(7+2e)=0

We add all the numbers together, and all the variables

-(2e+7)+4=0

We get rid of parentheses

-2e-7+4=0

We add all the numbers together, and all the variables

-2e-3=0

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

-2e=3

e=3/-2

e=-1+1/2

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