3(e-4)=12

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Solution for 3(e-4)=12 equation: 



3(e-4)=12

We move all terms to the left:

3(e-4)-(12)=0

We multiply parentheses

3e-12-12=0

We add all the numbers together, and all the variables

3e-24=0

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

3e=24

e=24/3

e=8

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