简便运算:7/29×3/8+6/29×7/12+3/29×7/9

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简便运算:7/29×3/8+6/29×7/12+3/29×7/9

简便运算:7/29×3/8+6/29×7/12+3/29×7/9
简便运算:7/29×3/8+6/29×7/12+3/29×7/9

简便运算:7/29×3/8+6/29×7/12+3/29×7/9
7/29×3/8+6/29×7/12+3/29×7/9
=1/29×(7×3/8+6×7/12+3×7/9)
=1/29×(203/24)=7/24
7/29×3/8+6/29×7/12+3/29×7/9
=7/29×(3/8+6/12+3/9)
=7/29×(29/24)=7/24

你好像打错题了

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