I have a problem with this assignment:

The 26th one:

![enter image description here](https://i.stack.imgur.com/T5w4Q.jpg)

I am supposed to minimize this, and I get to 

" XY + ZY + ( Z\*(inverted X) )"

But solution to this problem is 
![enter image description here](https://i.stack.imgur.com/Qb9o3.jpg)

I don't know how to minimize more the solution I got up there :/

Does anyone know?