求既满足不等式5x-2>3(x+1)又满足不等式1/2x-1

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/25 13:23:57
求既满足不等式5x-2>3(x+1)又满足不等式1/2x-1

求既满足不等式5x-2>3(x+1)又满足不等式1/2x-1
求既满足不等式5x-2>3(x+1)又满足不等式1/2x-1<=7-3/2x的正整数解
如题

求既满足不等式5x-2>3(x+1)又满足不等式1/2x-1
5x-2>3(x+1) ==> x>3/2
第二个不等式应该是?
(1/2)x-1<=7-(3/2)x ==> x<=4
3/2

由5x-2>3(x+1)得x>5/2
由1/2x-1<=7-3/2x得x<=4
∴5/2∴正整数解为x=3,4

由5x-2>3x+3
得x>5/2
由1/2x-1<=7-3/2x
得x<=4
所以5/2正整数解为x=3,4