如题所述
解:简便计算方法如下
9-25×7-2
=9-25×(4+3)-2
=9-25×4-25×3-2
=9-100-75-2
=-91-75-2
=-168
望采纳,谢谢
9-25×7-2
=9-25×(4+3)-2
=9-25×4-25×3-2
=9-100-75-2
=-91-75-2
=-168
望采纳,谢谢
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第1个回答 2020-04-29
只能按照混合运算的顺序来解决
9-25×7-2
=9-175-2
=-166-2
=-168
望采纳,谢谢!本回答被网友采纳
9-25×7-2
=9-175-2
=-166-2
=-168
望采纳,谢谢!本回答被网友采纳
第2个回答 2020-04-29
9-25×7-2
=7-25×7
=7x(1-25)
=7x(-24)
=-168
=7-25×7
=7x(1-25)
=7x(-24)
=-168