脱式计算9÷2÷((1÷2+3÷4)×6÷5)
解题思路:四则运算规则(按顺序计算、先算乘除后算加减,有括号先算括号,有乘方先算乘方)即脱式运算(递等式计算)需在该原则前提下进行
解题过程:
9/2÷((1/2+3/4)×6/5)
=9/2÷((2/4+3/4)×6/5)
=9/2÷(5/4×6/5)
=9/2÷3/2
=9/2×2/3
=3
存疑请追问,满意请采纳
9/2÷[(1/2+3/4)x6/5]
=9/2÷[(2/4+3/4)x6/5]
=9/2÷[5/4x6/5]
=9/2÷3/2
=3