29分之7×8分之3×29分之6×12分之7+29分之3×9分之7的简便运算急

问题描述:

29分之7×8分之3×29分之6×12分之7+29分之3×9分之7的简便运算急

7/29x3/8+6/29x7/12+3/29x7/9
=7/29(3/8+7/12+3/7x7/9)
=7/29×(3/8+1/2+1/3)
=7/29×29/24
=7/24

7/29×3/8+6/29×7/12+3/29×7/9
=7/29×(3/8+6/12+3/9)
=7/29×(3/8+1/2+1/3)
=7/29×29/24
=7/24