解方程 x-25-(x-25)*0.4=0.5x

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/30 00:55:11
解方程 x-25-(x-25)*0.4=0.5x

解方程 x-25-(x-25)*0.4=0.5x
解方程 x-25-(x-25)*0.4=0.5x

解方程 x-25-(x-25)*0.4=0.5x
展开得:X-25-0.4X+25*0.4=0.5X
化简得:0.1X=33
解得:X=330

X-25-(X-25)*0.4=0.5X
化简:X-25-0.4X+10-0.5X=0
0.9X-15=0
0.9X=15
X= 50/3
解得X=50/3.

x=150
X-25-(X-25)*0.4=0.5X
X-25-0.4X+10=0.5X
X-0.9X=15
0.1X=15
X=150

o(∩_∩)o...
X-25-(X-25)*0.4=0.5X
化简:X-25-0.4X+10-0.5X=0
0.9X-15=0
0.9X=15
X= 50/3
解得X=50/3.