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4(3+e)+e=e+4
We move all terms to the left:
4(3+e)+e-(e+4)=0
We add all the numbers together, and all the variables
4(e+3)+e-(e+4)=0
We add all the numbers together, and all the variables
e+4(e+3)-(e+4)=0
We multiply parentheses
e+4e-(e+4)+12=0
We get rid of parentheses
e+4e-e-4+12=0
We add all the numbers together, and all the variables
4e+8=0
We move all terms containing e to the left, all other terms to the right
4e=-8
e=-8/4
e=-2
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