如题所述
第1个回答 2020-10-14
此式等于
(3/4-1/8)×5/6+2/3
=(6/8-1/8)×5/6+2/3
=5/8×5/6+2/3
=25/48+2/3
=25/48+32/48
=57/48
=19/16
=1 3/16
(3/4-1/8)×5/6+2/3
=(6/8-1/8)×5/6+2/3
=5/8×5/6+2/3
=25/48+2/3
=25/48+32/48
=57/48
=19/16
=1 3/16
第2个回答 2020-10-14
(3/4-1/8)×(5/6+2/3)
=(6/8-1/8)×(5/6+4/6)
=5/8×9/6
=45/48
=(6/8-1/8)×(5/6+4/6)
=5/8×9/6
=45/48