Question 75830
<pre>
To write an expression in simplest form, be sure to divide the greatest common
factor.

                -15x^3y^3
              ____________
                 -20xy^4




              -1*3*5*x*x*x*y*y*y
             ____________________        divide the common fators
              -1*4*5*x*y*y*y*y




                3*x*x
              _________
                 4*y




                 3x^2
               _______
                 4y
        




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