( `5/27` + `4/5` - `15/19`) - ( `4/19` - `22/27)
= `5/27` + `4/5` - `15/19` - `4/19` + `22/27`
= ( `5/27` + `22/27) - ( `15/19` + `4/19`) + `4/5`
= `27/27` - `19/19` + `4/5`
= 1 - 1 + `4/5`
= 0 + `4/5`
= `4/5`
d)
( -56+ 201) - ( -18 + 44) + 199
= -56 + 201 + 18 - 44 + 199
= ( -56 - 44) + ( 201 + 199) + 18
= -100 + 400 + 18
= 300 + 18
= 318
