86.7-(14.3-3.8+20)怎样简便计算简便计算
86.7-(20+14.3-3.8)
=86+0.7-(20+0.3+14-3-0.8)
=86+0.7-20-0.3-14+3+0.8
=86-20-14+3+(0.7-0.3+0.8)
=55+1.2
=56.2
=86+0.7-(20+0.3+14-3-0.8)
=86+0.7-20-0.3-14+3+0.8
=86-20-14+3+(0.7-0.3+0.8)
=55+1.2
=56.2
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第1个回答 2018-05-13
86.7-(14.3-3.8+20)怎样简便计算简便计算
86.7-(14.3-3.8+20)
=86.7-14.3+3.8-20
=72.4+3.8-20
=76.2-20
=56.2本回答被网友采纳
86.7-(14.3-3.8+20)
=86.7-14.3+3.8-20
=72.4+3.8-20
=76.2-20
=56.2本回答被网友采纳
第2个回答 2022-05-27
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