It is known that 10 + 3 = x + y, where x is an integer and 0

It is known that 10 + 3 = x + y, where x is an integer and 0

-12+√3
Because x = 11, y = (√ 3) - 1, X-Y = 11 - [(√ 3) - 1] = 12 - (√ 3)