Question 631651
={{{(3x^2/9y)/(7x/14y)}}}
={{{(cross(3)x^2/cross(9)y)/(cross(7)x/cross(14)y)}}}
={{{(x^2/3y)/(x/2y)}}}
={{{(x^2/3y)(2y/x)}}}
={{{(cross(x^2)/3cross(y))(2cross(y)/cross(x))}}}
={{{(x/3)(2/1)}}}
={{{2x/3}}}