`a) (31 6/13 + 5 9/41) - 36 6/13`
`= 31 6/13 + 5 9/41 - 36 6/13`
`= ( 31 6/13 - 36 6/13) + 5 9/41`
`=-5 + 5 9/41`
`=9/41`
``
`b) 5/3 + (-2/7) - (-1,2)`
`= 5/3 - 2/7 + 6/5`
`=175/105 - 30/105 + 126/105`
`= 271/105`
``
`c) 0,25 + 3/5 - ( 1/8 - 2/5 + 1 1/4)`
`= 1/4 + 3/5 - 1/8+ 2/5 - 1 1/4`
`= ( 1/4 - 1 1/4) + ( 3/5 + 2/5) - 1/8`
`=-1 + 1 - 1/8`
`= 0 - 1/8`
`= -1/8`
`#caty09`
