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e-19=-3(e+4)
We move all terms to the left:
e-19-(-3(e+4))=0
We calculate terms in parentheses: -(-3(e+4)), so:We get rid of parentheses
-3(e+4)
We multiply parentheses
-3e-12
Back to the equation:
-(-3e-12)
e+3e+12-19=0
We add all the numbers together, and all the variables
4e-7=0
We move all terms containing e to the left, all other terms to the right
4e=7
e=7/4
e=1+3/4
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