Question 943127
{{{(7^(n+2)-35(7^(n-1)))/(44(7^(n+2)))}}}
{{{(7^(n+2))(1-35(7^-3))/(44(7^(n+2)))}}}
{{{(1-35(7^-3))/(44)}}}
{{{(1-5(7^-2))/(44)}}}
{{{(1-5/49)/(44)}}}
=54/(49*44)=54/2646=1/49