|-8又八分之三+4又二分之一|+(-8又1四分之一)+|-5-二分之一|
=|-67/8+9/2|-33/4+|-5-1/2|
=|-67/8+36/8|-33/4+|-11/2|
=31/8-33/4+11/2
=31/8-66/8+44/8
=9/8
|-8又八分之三+4又二分之一|+(-8又1四分之一)+|-5-二分之一|
=|-67/8+9/2|-33/4+|-5-1/2|
=|-67/8+36/8|-33/4+|-11/2|
=31/8-33/4+11/2
=31/8-66/8+44/8
=9/8