2-x/x-3整体+1/3-x=3(2)5x-4/2x-4=2x+5/3x-6整体-0.5解方程
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/08 17:07:25
2-x/x-3整体+1/3-x=3(2)5x-4/2x-4=2x+5/3x-6整体-0.5解方程
(2-x)/(x-3)+1/(3-x)=3
(2-x)/(x-3)-1/(x-3)=3
(2-x-1)/(x-3)=3
1-x=3x-9
4x=10
x=2.5
(5x-4)/(2x-4)=(2x+5)/(3x-6)-0.5
3(5x-4)/(6x-12)=2(2x+5)/(6x-12)-3
3(5x-4)/(6x-12)-2(2x+5)/(6x-12)+3=0
(15x-12-4x-10)+3(6x-12)=0
11x-22+18x-36=0
29x=58
x=2
经检验x=2是增根
(2-x)/(x-3)-1/(x-3)=3
(2-x-1)/(x-3)=3
1-x=3x-9
4x=10
x=2.5
(5x-4)/(2x-4)=(2x+5)/(3x-6)-0.5
3(5x-4)/(6x-12)=2(2x+5)/(6x-12)-3
3(5x-4)/(6x-12)-2(2x+5)/(6x-12)+3=0
(15x-12-4x-10)+3(6x-12)=0
11x-22+18x-36=0
29x=58
x=2
经检验x=2是增根
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