Question 1006126
a is in only one term , so isolate that term first.


{{{1/a=1-1/p}}}




{{{1/a=(p-1)/p}}}


{{{a(1/a)=a(p-1)/p}}}


{{{1=a(p-1)/p}}}


{{{1(p/(p-1))=a}}}
OR
{{{highlight(a=p/(p-1))}}}