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4e-19=43(e+4)
We move all terms to the left:
4e-19-(43(e+4))=0
We calculate terms in parentheses: -(43(e+4)), so:We get rid of parentheses
43(e+4)
We multiply parentheses
43e+172
Back to the equation:
-(43e+172)
4e-43e-172-19=0
We add all the numbers together, and all the variables
-39e-191=0
We move all terms containing e to the left, all other terms to the right
-39e=191
e=191/-39
e=-4+35/39
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