`(-5/12 + 7/4 - 3/8) - | 4 1/2 - 7 1/3| - ( 1/4 - 5/2)`
`= (-10/24 + 42/24 - 9/24) - |9/2 - 22/3| - ( 1/4 - 10/4)`
`= 23/24 - | 27/6 - 44/6| - (-9)/4`
`= 23/24 - |(-17)/6| + 9/4`
`= 23/24 - 17/6 + 9/4`
`= 23/24 - 68/24 + 54/24`
`=9/24`
`= 3/8`
`#caty09`