12.7-4.8-5.2简便

如题所述

12.7-4.8-5.2
=12.7-(4.8+5.2)
=12.7-10
=2.7
温馨提示:答案为网友推荐,仅供参考
第1个回答  2011-12-27
12.7-4.8-5.2
=12.7-(4.8+5.2)
=12.7-10
=2.7