4x-1.4x-3x+2.4=0

分类: 作业答案 • 2021-12-31 13:51:54

问题描述：

4x-1.4x-3x+2.4=0
2.4x-1.4x-3x+2.4=0

答

2.4x-1.4x-3x+2.4=0
移项
3x+1.4x-2.4x=2.4
(3+1.4-2.4)x=2.4
2x=2.4
x=2.4÷2
x=1.2