如题所述
第1个回答 2020-01-18
23.4÷7.8-2.3
=3-2.3
=0.7
=3-2.3
=0.7
第2个回答 2020-01-18
23.4÷7.8-2.3
=23.4÷2÷3.9-2.3
=11.7÷3÷1.3-2.3
=3.9÷1.3-2.3
=3-2.3
=0.7本回答被网友采纳
=23.4÷2÷3.9-2.3
=11.7÷3÷1.3-2.3
=3.9÷1.3-2.3
=3-2.3
=0.7本回答被网友采纳