5x+2=-8 x=30 3x=5x-14 x5x+2=-8x=303x=5x-14x=-7/47-2x=3-4xx=-5/31/2x+1=3-xx=-2

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/08 12:03:13
5x+2=-8 x=30 3x=5x-14 x5x+2=-8x=303x=5x-14x=-7/47-2x=3-4xx=-5/31/2x+1=3-xx=-2

5x+2=-8 x=30 3x=5x-14 x5x+2=-8x=303x=5x-14x=-7/47-2x=3-4xx=-5/31/2x+1=3-xx=-2
5x+2=-8 x=30 3x=5x-14 x
5x+2=-8
x=30
3x=5x-14
x=-7/4
7-2x=3-4x
x=-5/3
1/2x+1=3-x
x=-2

5x+2=-8 x=30 3x=5x-14 x5x+2=-8x=303x=5x-14x=-7/47-2x=3-4xx=-5/31/2x+1=3-xx=-2
全错
5x+2=-8
5x=-10
x=-2
3x=5x-14
-2x=-14
x=7
7-2x=3-4x
2X=-4
x=-2
1/2x+1=3-x
3/2x=2
x=4/3

5x+2=-8,得x=-2
3x=5x-14,得x=7
7-2x=3-4x,得x=3
1/2x+1=3-x,得x=4/3

都错了

x=-2
x=7
x=-2
x=4/3
怎么做到的,全错