Are there any values of x and y for which x + y is equal to x - y

You can choose any value for , while you must choose .

Intuitively, this makes sense since means that you want to start from number , and you want to obtain the same result by moving left or right by units. This can't happen, unless you don't move at all, i.e. .

If you want to be more formal, you have

while was canceled, so it can assume any value.

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step-by-step explanation:

24

step-by-step explanation:

if it takes 8 pounds to make 12 divide 12 by 8 and you get 1.5, 1.5 x 16 = 24