2-5/12÷7/24+2/7 简便计算（递等式,
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2-5/12÷7/24+2/7简便计算（递等式,2-5/12÷7/24+2/7简便计算（递等式,2-5/12÷7/24+2/7简便计算（递等式,2-5/12÷7/24+2/7=2-5/12x24/7+
2-5/12÷7/24+2/7 简便计算（递等式,
2-5/12÷7/24+2/7 简便计算（递等式,
2-5/12÷7/24+2/7 简便计算（递等式,
2-5/12÷7/24+2/7
=2-5/12x24/7+2/7
=2-10/7+2/7
=2-8/7
=6/7
2-5/12÷7/24+2/7
=2-5/84/24+2/7
=2-5/2016+2/7
=2-5/2016+576/2016
=2+571/2016
=2又571/2016
2- 5 ÷ 7 + 2
12 24 7
=2- 5 ×24+ 2
12 7 7
=2-10+ 2
7 7
=2-8
7
= 6
7
2-5/12÷7/24+2/7
=2-5/12x24/7+2/7
=2-(10/7-2/7)
=2-8/7
=6/7