Question

If'x' and 'y' are two integers such that 'y' is the opposite of 'x', then x - y is always :​

Answer 1

Answer:

if x and y are the two integer such that y is opposite of x

then x-y

will be zero if x=y

Answer 2

$\large\pink {❥ Answer ࿐}$

What your are starting with is

Let x, y be integers.

(xy is even) ⟹(x is even or y is even)

The contrapositive is then ¬(x is even or y is even) ⟹¬(xy is even).

This means we want to prove that if x is odd AND y is odd, then xy is odd.

Start in the standard way: Let x=2a+1x=2a+1 and let y=2b+1y=2b+1 where a,b∈Z.

Then calculate xy, and represent the product as an odd integer.