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63/e=9
We move all terms to the left:
63/e-(9)=0
Domain of the equation: e!=0We multiply all the terms by the denominator
e∈R
-9*e+63=0
We add all the numbers together, and all the variables
-9e+63=0
We move all terms containing e to the left, all other terms to the right
-9e=-63
e=-63/-9
e=+7
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