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For the sum being 22

X + Y = 22

X and Y can be a range of different numbers, such as 1+21, 2+20, 3+19 and so on.

For the difference being 20

X - Y = 20

If you'd fill in the ranges of numbers above, you'd get 21-1=20, 20-2=18, 19-3=16 and so on.

X must be 21 and Y must be 1.

21+1=22

21-1=20

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14y ago

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