四分之三减八分之一括号乘以六分之五加三分之二括号等于多少？

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+4/6)
=5/8×9/6
=45/48