2:2

2:2 simplifies to 1:1 (and numerically, 2:2 = 2/2 = 1).

How: gcd(2,2) = 2; divide both parts by 2 → (2/2):(2/2) = 1:1.

If you meant a different context (e.g., a proportion, or another numbers), tell me and I’ll tailor it.