They are already in the correct order !
This is not correct. If x=11, then 9+x=20. In order for 9+x=21 to be correct, x would have to be equal to 12.
31 - 9 - 2 = 2031 - 9 - 2 = 20They are both the same. Even if you changed the order of the 9 and 2, like the following, it would result in the same:31 - 2 - 9 = 20
20/9 = 2 2/9
2 9/20, as a decimal = 2.45
m = 20/9 or 2 and 2/9
20
0.2 recurring = 2/9, 0.45 = 9/20. Multiplying 2/9 x 9/20 gives 2/20 or 1/10 or 0.1.
No. 9/20 is 12.5% bigger than 2/5. 8/20 is equivalent to 2/5.
2 2/9
20 + (9 - 8)*2 = 22.
5 x 9/20 = 45/20 = 9/4 or 2 and 1/4