2-2

If you mean the arithmetic: 2 − 2 = 0.

Reason: subtracting a number from itself gives zero; equivalently 2 + (-2) = 0; on the number line you’d land at 0.

If you meant something else (e.g., problem 2-2 from a specific exam or a different context), please share the full problem and I’ll help. Want a couple quick practice items like 7−4, 5−5, and −3−2?