作业帮15000x+3000x+800（350-2.5）=50
来源：学生作业帮助网 编辑：作业帮 时间：2024/04/29 12:23:34
15000x+3000x+800（350-2.5）=50
15000x+3000x+800（350-2.5）=50
15000x+3000x+800（350-2.5）=50
15000x+3000x+800(350-2.5)=500000
18000x+278000=500000
18000x=222000
X=111/9
18000x+280000+2000＝50
x＝（50－280000－2000）/18000
15000x+3000x+800（350-2.5）=50（15000+3000）x+278000＝50
18000x=50-278000
x=-277950/18000
x=-15又120分之53