2:2

2:2 simplifies to 1:1. You get this by dividing both terms by their greatest common divisor, which is 2.

Quick tips:

• Use gcd(a, b) to reduce a:b to a/gcd(a,b) : b/gcd(a,b).
• Examples: 6:8 → 3:4; 9:9 → 1:1; 0:5 → 0:1.

Want more practice problems or examples in a specific context (proportions, algebra, etc.)?