··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/06 08:26:52
··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y
x);v=Jm=K}=SJ]S}#[=cQ%PƦJ"}ِf랮o=fg`mO/{ڿ鄞';g<ٽ@@`ICJmS]cJ]sS[Cm#eƆ`&ola_\gr8S_

··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y
··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y

··0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3求y
确定原式是:0.4y+0.9/0.5-y-5/2=0.3+0.2y/0.3?
左右同乘以30,得:
12y+54-30y-75=10+20y
38y=31
y=31/38