Write this as a single fraction in its simplest possible form.

x/yz . y^2x/z . z^2/y

please note that the dot "." is equilvalent to a multiplication sign.

Remember it needs to be in a single fraction.
And can you please tell me step by step so i know for future reference.

Thankyou

just multiply the tops and bottoms:

x y^2 z^2
-----------------
yz z y

add the powers of each variable:

x y^2 z^2
------------
y^2 z^2

Now cancel like factors, and you wind up with just

x