7+0.4e=8.2

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Solution for 7+0.4e=8.2 equation: 



7+0.4e=8.2

We move all terms to the left:

7+0.4e-(8.2)=0

We add all the numbers together, and all the variables

0.4e-1.2=0

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

0.4e=1.2

e=1.2/0.4

e=2+0.4/0.4

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