Question

二分之一除以大括号小括号八又二十分之七减四又四分之三括号乘十八分之五加六？

Answer 1

二分之一除以大括号小括号八又二十分之七减四又四分之三括号乘十八分之五加六？
解：列式如下：
1/2÷[(8+7/20-(4+3/4)]x5/18+6
=1/2÷[(4+7/20-3/4)]x5/18+6
=1/2÷[(4+7/20-15/20)]x5/18+6
=1/2÷[(4-1/5]x5/18+6
=1/2÷[19/5]x5/18+6
=1/2÷19/18+6
=36/19+6
=7又17/19.

Answer 2

1/2÷{(8又7/20一4又3/4)×5/18+6}
=1/2÷{3又3/5×5/18十6}
=1/2÷(1+6)
=1/2÷7
=1/14。

Answer 3

1/2÷[(8又7/20-4又3/4)×5/18+6]
=1/2÷[((8-4)+(7/20-15/20))×5/18+6]
=1/2÷[(4-2/5)×5/18+6]
=1/2÷[10/9-1/9+6]
=1/2÷7
=1/14

Answer 4

(1/2) ÷ [(8+7/20)-(4+3/4)] × 18分之5+6
=(1/2) ÷ [(17/20)-(17/4)] × 5/18+6
=(1/2) ÷ [-4/20] × 5/18+6
=(1/2) × 5 × 5/18+6
=5/4+6
=6又5/4

Answer 5