Question 398870
{{{(1/3 - 1/x)/(3/x - 1)}}}



{{{((1*x-1*3)/3x) /((3-1*x)/x)}}}




{{{((x-3)/3x) /((3-x)/x)}}}....multiply outer and inner 


{{{((x-3)x) /(3x(3-x))}}}


{{{((x-3)cross(x)) /(3cross(x)(3-x))}}}


{{{(x-3) /3(3-x))}}}........pull out {{{-1}}} in {{{(3-x)}}}


{{{(x-3) /(-1*3(-3+x))}}}


{{{(x-3) /-3(x-3))}}}


{{{cross((x-3)) /-3cross((x-3)))}}}


{{{-(1/3)}}}