`a,12 1/3 - |3 3/4 + 4 3/4|`
`=37/3 - 17/2`
`=23/6`
`b,3 5/6 + 2 1/6 . 6`
`=23/6 + 13`
`=101/6`
`c,3 1/2 + 4 5/7 - 5 5/14`
`=3 + 1/2 + 4 + 5/7 - 5 - 5/14`
`=2 6/7 = 20/7`
`d,4 1/2 + 1/2 : 5 1/2`
`=9/2 + 1/2 : 11/2`
`=9/2 + 1/11`
`=101/22`
`e,6/7 : |1/2 . 3/4| - 5/8`
`=6/7 : 3/8 - 5/8`
`=16/7 - 5/8`
`=93/56`
`f,34 - 2 : |3/5 - 1/2|`
`=34 - 2 : 1/10`
`=34 - 20`
`=14`