六年级数学题(一元一次不等式)

问题描述:

六年级数学题(一元一次不等式)
1.3x+2小于等于(3/2)x+8
2.(2/3)x-1/4小于等于3/2x
3.10-4(x-3)小于等于2(x-1)
4. (3x-2)/2小于等于(x-1)/3
5.1/3(x+1)-1/2(x-1)大于等于1/6(x-2)
6. 6-3(x-2)大于6(x-2)
Ps:解不等式,谢谢撒~

1.3x+2小于等于(3/2)x+8
3x+2≤3x/2+8
3x/2≤6
x≤4
2.(2/3)x-1/4小于等于3/2x
2x/3-1/4≤3x/2
3x/2-2x/3≥-1/4
5x/9≥-1/4
x≥-9/20
3.10-4(x-3)小于等于2(x-1)
10-4(x-3)≤2(x-1)
10-4x+12≤2x-2
-6x≤-24
x≥4
4.(3x-2)/2小于等于(x-1)/3
(3x-2)/2≤(x-1)/3
9x-6≤2x-2
7x≤4
x≤4/7
5.1/3(x+1)-1/2(x-1)大于等于1/6(x-2)
(x+1)/3-(x-1)/2≥(x-2)/6
2x+2-3x+3≥x-2
-2x≥-7
x≤7/2
6.6-3(x-2)大于6(x-2)
6-3x+6>6x-12
9x