··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:六六作业网 时间:2024/12/24 20:38:10
··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/

··0.4y+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