9 out of 11 and 0.45

9 out of 11 and 0.45

Multiply by 220
=180：99
Divide by 9
=20：11

What is the ratio of 11 to 9 and 10 to 9?
What's the simplification ratio?

11/9÷10/9＝11/9*9/10＝11/10

Ratio: 0.11:1

0.11:22
=11：2200
=1：200
Ratio = 1 / 200
Do not understand can ask, help please adopt, thank you!

First simplify, then calculate the ratio 28 / 11 400:250.45:0.50.7/14
It's as simple as it is
9/7÷11/6＋2/9×6/11 5÷5/7-5/7×1/5
5/16＋(7/16-1/4)÷1/2

28 / 11 = 28:11 (simplest) 400:25 = 16:1 (divide by 25 at the same time) 0.45:0.5 = 45:50 = 9:100.7/14 = 7 / 140 = 1 / 20 = 1:209 / 7 △ 11 / 6 + 2 / 9 × 6 / 11