Question

二又六分之五减七分之五加十六分之十一减七分之二等于？

Answer 1

2又5/6-5/7+11/6-2/7
=2又5/6+11/6-（5/7+2/7）
=2又16/6-1
=1又8/3
=3又1/3
加法交换律结合律简便运算

Answer 2

二又六分之五减七分之五加十六分之十一减七分之二等于？
=17/6-5/7+11/16-2/7
=136/48+33/48-1
=169/48-1
=121/48
=2又48分之25

Answer 3

答：
2又5/6-5/7+11/16-2/7
=17/6+11/16-1
=17/6-6/6+11/16
=11/6+11/16
=11×(1/6+1/16)
=11×(8/48+3/48)
=11×11/48
=121/48
=2又25/48