this question seems easy but i can't get it right.

The sum of two numbers is 752, and their difference is 174. What are the two numbers?

this is what i did:

x+y=752

x-y= 174

from this i got x=454 and y=298

the book says 463 and 298 are the solutions.

is the book wrong cause i can't seem to get the 463?