如题所述
第1个回答 2020-02-13
53+23.4÷7.2
=53+2×9×13
÷2×9×4
=53+13/4
=56+1/4
=56.25本回答被网友采纳
=53+2×9×13
÷2×9×4
=53+13/4
=56+1/4
=56.25本回答被网友采纳
第2个回答 2020-02-13
=1.53+(23.4÷9)÷(7.2÷9)
=1.53+2.6÷0.8
=1.53+3.25
=4.78
=1.53+2.6÷0.8
=1.53+3.25
=4.78