Question 673721
{{{((y^2+y)/(3xy))((3x+3)/(y^2+2y+1))}}}....multiply nominator by nominator and denominator by denominator


{{{((y^2+y)(3x+3))/((3xy)(y^2+2y+1))}}}


{{{((y^2+y)(3x+3))/((3xy)(y^2+2y+1))}}}....factor out {{{y}}} and {{{3}}} from nominator


{{{(3y(y+1)(x+1))/((3xy)(y^2+2y+1))}}}


{{{(cross(3)cross(y)(y+1)(x+1))/((cross(3)x*cross(y))(y^2+2y+1))}}}


{{{((y+1)(x+1))/(x(y^2+2y+1))}}}....replace {{{(y^2+2y+1)}}} with {{{(y+1)^2}}}


{{{((y+1)(x+1))/(x(y+1)^2)}}}


{{{(cross((y+1))(x+1))/(x(y+1)^cross(2))}}}


{{{(x+1)/(x(y+1))}}}