`(-1)/12 - ( 2 5/3 - 1/3)`
`= (-1)/12 - 2 5/3 + 1/3`
`= (-1)/12 - 11/3 + 1/3`
`= (-1)/12 - 44/12 + 4/12`
`= (-1-44+4)/12`
`=-41/12`
_____________________________
`-1,75 - (-1/9 - 2 1/18)`
`= -1,75 + 1/9 +2 1/18`
`=(-7)/4 + 1/9 +37/18`
` = (-63)/36 + 4/36 + 74/36`
`= (-63 + 4 +74)/36`
`=15/36`
`=5/12`
_____________________________________
`2/5 + (-4/3) + (-1/2)`
`=2/5 - 4/3 - 1/2`
`=12/30 - 40/30 - 15/30`
`=(12-40-15)/30`
`=(-43)/30`
_____________________________________
`3/12 - (6/15 - 3/10)`
`=1/4 - 2/5 + 3/10`
`=5/20 - 8/20 + 6/20`
`=(5-8+6)/20`
`=3/20`
__________________________________
`(5 5/11 + 3 5/3) - 3 5/11`
`=5 5/11 + 3 5/3 - 3 5/11`
`= [ 5 5/11 - 3 5/11] + 3 5/3`
`= [ (5-3)(5/11-5/11)] + 3 5/3`
`=2 + 3 5/3`
`=2 + 14/3`
`=6/3 + 14/3`
`=(14+6)/3`
`=20/3`
_____________________________________
`4/9 : (-1/7) + 6 5/9 : (-1/7)`
`=4/9 xx (-7) + 6 5/9 xx (-7)`
`=(-7) xx ( 4/9 + 6 5/9)`
`=(-7) xx ( 4/9 + 59/9)`
`= (-7) xx ((4+59)/9)`
`=(-7) xx 63/9`
`=(-7) xx 7`
`=(-49)`
____________________________________
`#LeMichael`
