<PRE><B>Question 315838</B>
x^2-10x+25/2x^2-x-21]/[x^2-x-20/3x^2+5x-12]
..
[(x-5)^2 / (2x-7)(x+3)] /  [(x-5)(x+4) /(x+3)(3x-4)]   

..
[(x-5)^2 / (2x-7)(x+3)] *  [(x+3)(3x-4)/(x-5)(x+4)]   
..
(x-5)(3x-4)/(2x-7)(x+4)

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