Question 175525
 please help me Simplify: 
{{{(a-a^-1)/(1-a)}}}
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={{{(a-(1/a))/(1-a)}}}
Multiply by a
={{{(a^2-1)/(a*(1-a))}}}
={{{(a-1)*(a+1)/(a*(1-a))}}}
(a-1) = -(1-a) so cancel those
={{{-(a+1)/a}}}