You can put this solution on YOUR website! Treat each part of this problem as its own little mini-problem, so we get
-20t^5u^2v^3 / 48t^7u^4v =
(-20/48)(t^5/t^7)(u^2/u^4)(v^3/v) =
(-5/12)(1/t^2)(1/u^2)(v^2) =
-5v^2 / 12t^2u^2
Of course you don't have to separate it like I showed you...I did that to show you what I mean...
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