`3/4 - [(-3)/5 - (1/12 + 2/9) - ((-2)/9 - 5/3)]`
`= 3/4 - ((-3)/5 - 1/12 - 2/9 + 2/9 + 5/3)`
`= 3/4 + 3/5 + 1/12 + 2/9 - 2/9 - 5/3`
`= (3/4 + 3/5 + 1/12 - 5/3) + (2/9 - 2/9)`
`= (45/60 + 36/60 + 5/60 - 100/60) + 0`
`= (45 + 36 + 5 - 100)/60`
`= (-14)/60`
`= (-7)/30`