(6-2.4)×2.5=9~回答完毕~~结果仅供参考~~\(^o^)/~祝学习进步~~~
(6-2.4)X2.5=3.6X2.5=0.9X4X2.5=0.9X10=9
(6-2.4)×2.5=3.6×2.5=9