7/12×6+5/12×6-1/4×2.1

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7/12×6+5/12×6-1/4×2.17/12×6+5/12×6-1/4×2.17/12×6+5/12×6-1/4×2.1原式=(7/12+5/12)×6-[1/4×(2+0.1)]=1×6-1/

7/12×6+5/12×6-1/4×2.1
7/12×6+5/12×6-1/4×2.1

7/12×6+5/12×6-1/4×2.1
原式
=(7/12+5/12)×6-[1/4×(2+0.1)]
=1×6-1/4×2-1/4×0.1
=6-0.5-0.025
=5.475

您好:
7/12×6+5/12×6-1/4×2.1
=6/12x7+6/12x5-1/4x21/10
=1/2x(7+5)-21/40
=1/2x12-21/40
=6-21/40
=5又19/40

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您好:
7/12×6+5/12×6-1/4×2.1
=6/12x7+6/12x5-1/4x21/10
=1/2x(7+5)-21/40
=1/2x12-21/40
=6-21/40
=5又19/40

如果本题有什么不明白可以追问,如果满意请点击右下角“采纳为满意回答”
如果有其他问题请采纳本题后,另外发并点击我的头像向我求助,答题不易,请谅解,谢谢。
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