9:9

Interpreting it as a ratio 9:9:

• Simplified form: 1:1
• Reason: gcd(9,9) = 9, divide both by 9 → (1:1)
• As a fraction: 9/9 = 1
• As a decimal: 1.0
• As a percentage: 100%

If you meant something else by "9:9" (e.g., a time like 9:09 or a different context), let me know and I’ll adjust.