Question

If x is an element of whole numbers which is not present in set of natural numbers and y= 3/4+(-5/6) then value of x and y,(x+y)+(x-y)

Answer 1

As x is a element of whole number,but not of natural number.
so that element can be zero only.
$x = 0 \\ y = \frac{3}{4} - \frac{5}{6} = \frac{9 - 10}{12} = \frac{ - 1}{12} \\ \\ y = \frac{ - 1}{12} \\ x + y = 0 + \frac{ - 1}{12} \\x + y = \frac{ - 1}{12} \\ x - y = 0 - \frac{ - 1}{12} \\ x - y = \frac{1}{12}$