7/29×8/3+6/29×7/12+3/29×7/9用简便方法计算
问题描述:
7/29×8/3+6/29×7/12+3/29×7/9用简便方法计算
答
7/29×8/3+6/29×7/12+3/29×7/9
=7/29×(8/3+1/2+1/3)
=7/29×7/2
=49/58