If M and N are opposite to each other, X is the smallest nonnegative number and Y is the smallest positive integer, find the value of (M + n) XY + y-x

If M and N are opposite to each other, X is the smallest nonnegative number and Y is the smallest positive integer, find the value of (M + n) XY + y-x

The value of (M + n) XY + Y-X is 1