Question 88719
2t^3/9a^2d^2-dz/12a^3b^2 
:
Assume you mean (a couple brackets here would help)
{{{(2t^3)/(9a^2d^2)}}} - {{{(dz)/(12a^3b^2)}}}
:
The common denominator:  {{{(9a^2d^2)(12a^3b^2)}}}
:
{{{((2t^3)(12a^3b^2) - (dz)(9a^2d^2))/((9a^2d^2)(12a^3b^2))}}}
:
Combine like terms:
{{{((24a^3b^2t^3) - (9a^2d^3z))/(108a^5b^2d^2)}}} = {{{((8a^3b^2t^3) - (3a^2d^3z))/(36a^5b^2d^2)}}}: reduce the numerical portions, canceled out 3
:
{{{((8ab^2t^3) - (3d^3z))/(36a^3b^2d^2)}}}: reduce, canceled out a^2
:
I think that is about all you can do with it