Question 340818
{{{(-3x^2-8xy+3y^2)/(3xy+9y^2)}}}
...
{{{(-3x^2-9xy+xy+3y^2)/(3xy+9y^2)}}}
{{{(-3x(x+3y)+y(x+3y))/(3xy+9y^2)}}}
{{{((x+3y)(y-3x))/((3y(x+3y)))}}}
{{{(y-3x)/3y}}}