I hope this is what you meant.  There could have been some parentheses that
you meant.  But I think you meant this:



First divide top and bottom by 5

 

Add the exponents of m on the bottom, 12+4 = 16

:

Subtract the exponents of x, larger minus smaller, 5-2=3.
Since the larger exponent 5 is on top, place x³ on top,
and eliminate x on the bottom.



Subtract the exponents of y, larger minus smaller, 20-15=5.
Since the larger exponent 20 is on the bottom, place y5 on the
bottom, and eliminate y on the top.



Subtract the exponents of m, larger minus smaller, 16-6=10.
Since the larger exponent 16 is on the bottom, place m10 on the
bottom, and eliminate m on the top.



That's all we can do.  I broke it all the way down to show you, but you
can do all those steps together.

Edwin