Question 296977
im assuming u mean
{{{(x+y)/(7x^2-7y^2)}}}
{{{(x+y)/7(x^2-y^2)}}}
{{{(x+y)/7(x-y)(x+y)}}}
{{{cross(x+y)/7(x-y)cross(x+y)}}}
{{{1/7(x-y)}}}