脱式计算11/12+(6/7-1/8)
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:
11/12+(6/7-1/8)
=11/12+(48/56-7/56)
=11/12+41/56
=154/168+123/168
=277/168存疑请追问,满意请采纳
原式
=11/12+(48/56一7/56)
=11/12+41/56
=154/168+123/168
=277/168
=1又109/168
如下示意
请采纳谢谢
=11/12+(48/56-7/56)
=11/12+41/56
=11*14/168+41*3/168
=277/168