30+15e=135

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Solution for 30+15e=135 equation: 



30+15e=135

We move all terms to the left:

30+15e-(135)=0

We add all the numbers together, and all the variables

15e-105=0

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

15e=105

e=105/15

e=7

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