如题所述
第1个回答 2019-06-29
1/7x5/ 12 +5/ 12÷7/6
=1/7X5/12+5/12X6/7
=5/12X(1/7+6/7)
=5/12X1
=5/12本回答被网友采纳
=1/7X5/12+5/12X6/7
=5/12X(1/7+6/7)
=5/12X1
=5/12本回答被网友采纳
第2个回答 2019-06-29
原式=1/7x5/12+5/12x6/7
=5/12x（1/7+6/7）
=5/12
=5/12x（1/7+6/7）
=5/12
