如题所述
23.4ï¼0.8ï¼13.4ï¼7.2
=ï¼23.4-13.4ï¼-ï¼0.8+7.2ï¼
=10-8
=2
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=ï¼23.4-13.4ï¼-ï¼0.8+7.2ï¼
=10-8
=2
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第1个回答 2014-12-23
23.4-0.8-13.4-7.2
=(23.4-13.4)-(0.8+7.2)
=10-8
=2
=(23.4-13.4)-(0.8+7.2)
=10-8
=2