Question

数学题解不等式组

x-5<0
1-x+1/2小于等于0
是x+1/2不是1-x+1/2
写详细点、我不太懂，谢谢

Answer 1

x-5<0 x<5
X+1/2小于等于0 X<=1

所以解是
X<=1

Answer 2

x-5<0 -->x<5
1-x+1/2<=0 两边+x，不等式符号方向不变
1-x+1/2+x<=0+x
3/2<=x

所以解是
3/2<=x<5

Answer 3

x-5<0 x<5
X+1/2小于等于0 X<=-1/2

所以解是
X<=-1/2

Answer 4

由x-5<0
知x<5
由1-x+1/2≤0
知3/2≤x
所以3/2≤x<5