|4/5| - |-5/9| = |4/5| - |5/9| |4/5| = 4/5 |5/9| = 5/9
4/5 - 5/9 = 4/5 - 5/9 = (36/45) - (25/45) = 11/45
|4/5| - |-5/9| = |4/5| - |5/9|
|4/5| = 4/5
|5/9| = 5/9
4/5 - 5/9 = 4/5 - 5/9 = (36/45) - (25/45) = 11/45