Question 739375
divide and state any restrictions. 
7x/4y^3 divided by 21x^3/8y
{{{(7x/4y^3)/(21x^3/8y)}}}
{{{(7x/4y^3)*(8y/21x^3)}}}
{{{(56xy)/(84x3y^3)=2/3x^2y^2}}}
restrictions: x≠0, y≠0