10/18
5/9
5/9 * 9/16 * 7/5 = 7/16
2/9 + 5/9 = 7/9
1/9 / 9/5 =5/18 beacuase (1/9)*5/9=5/18
(4/9) * (5/9) = 20/81
5/9 − 5/12 = 5/36
5/9 ÷ 5 = 1/9
x=9
12/5 ÷ 12/9 = 12/5 x 9/12 = 9/5 = 14/5
It is: 9/5
8/9 minus 5/9 is 1/3
5/9 + 2/3 = 5/9 +6/9 = 11/9 = 1 2/9