40又5分之3-15又9分之4-4又9分之5
=40-15-4+3/5-4/9-5/9
=40-20+3/5
=20又3/5
(2/3+3/4)×24
=16+18
=34
89x5/88
=(88+1)x5/88
=1又5/88
1又4分之3x6/7+1/7x1又3/4
=7/4x6/7+1/7x7/4
=6/4+1/4
=1又3/4
3-8/15x9/16
=3-72/90
=3-4/5
=2又1/5
(16/3+8/3)x5/8
=24/3x5/8
=5
40又5分之3-15又9分之4-4又9分之5
=40-15-4+3/5-4/9-5/9
=40-20+3/5
=20又3/5
(2/3+3/4)×24
=16+18
=34
89x5/88
=(88+1)x5/88
=1又5/88
1又4分之3x6/7+1/7x1又3/4
=7/4x6/7+1/7x7/4
=6/4+1/4
=1又3/4
3-8/15x9/16
=3-72/90
=3-4/5
=2又1/5
(16/3+8/3)x5/8
=24/3x5/8
=5