12=e(-3)

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Solution for 12=e(-3) equation: 



12=e(-3)

We move all terms to the left:

12-(e(-3))=0



We calculate terms in parentheses: -(e(-3)), so:

e(-3)

We multiply parentheses

-3e

Back to the equation:

-(-3e)



We get rid of parentheses

3e+12=0

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

3e=-12

e=-12/3

e=-4

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