解3.6x-0.4=12/243.6x-0.4=0.5、3.6x=0.5+0.43.6x=0.9x=1/4请采纳
3.6x-0.4×24=123.6x-9.6=123.6x=21.6x=6~回答完毕~~结果仅供参考~~\(^o^)/~祝学习进步~~~
