Answer:
3/7x
Step-by-step explanation:
21yz
--------------
49xyz
We can break this into pieces
21 1 y z
--- * ---- * ----- * ----
49 x y z
Now we can simplify. canceling the y terms and the z terms
3*7 1 1 1
------ * ---- * ----- * ----
7*7 x 1 1
Now we can simplify canceling the 7 terms
3 1
------ * ----
7 x
We are left with
3/ 7x
