$x+5 \times 10+y$

Step 1 ：First, we need to understand that the multiplication operation has a higher priority than the addition operation. So, we need to perform the multiplication first.

Step 2 ：\(x+5 \times 10+y = x+50+y\)

Step 3 ：Then, we can add the terms together.

Step 4 ：\(x+50+y = x+y+50\)

Step 5 ：Finally, we get the simplified expression: \(\boxed{x+y+50}\)