`e) 2/5 . 1/3 - 2/15 : 1/5 + 3/5 . 1/3`
`= (2/5+ 3/5) . 1/3 - 2/15 . 5/1`
`= 1 . 1/3 - 2/3`
`= 1/3 - 2/3`
`= -1/3`
-----------------------------------------
`g) 9/27 + 8/24 + 18/27 - \frac{-16}{24} + 2/3`
`= ( 9/27 + 18/27) + ( 8/24 - \frac{-16}{24} ) + 2/3`
`= 1 + 1 + 2/3`
`= 2 + 2/3`
`= 8/3`
---------------------------------------------------------
`h) A = 49 8/23 - ( 5 7/32 + 14 8/23)`
`= 49 8/23 - 5 7/32 - 14 8/23`
`= ( 49 8/23 - 14 8/23) - 5 7/32`
`= 35 - 5 7/32`
`= 29 25/32`
`= 953/32`
----------------------------------------------------
`i) B = 71 38/45 - (43 8/45 - 1 17/57)`
`= 71 38/45 - 43 8/45 + 1 17/57`
`= ( 71 38/ 45 - 48 8/45) + 1 17/57`
`= 28 2/3 + 1 17/57`
`= 29 55/57`
`= 1708/57`
`k) C = -3/7 . 5/9 + 4/9 . \frac{-3}{7} + 2 3/7`
`= -3/7 . ( 5/9 + 4/9) + 17/7`
`= -3/7 . 1 + 17/7`
`= -3/7 + 17/7`
`= 2`
-------------------------------------------------------
`b) -5/9 + 8/15 + \frac{-2}{11} + 4/-9 + 7/15`
`= ( -5/9 + 4/-9) + ( 8/15 + 7/15) + \frac{-2}{11}`
`= (-1) + 1 + \frac{-2}{11}`
`= 0 + \frac{-2}{11}`
`= -2/11`