解不等式、(1.8-8x)/12-(5x-0.4)/3≤(1.3-3x)/2

分类: 作业答案 • 2021-12-20 05:45:55

问题描述：

答

(1.8-8x)/12-(5x-0.4)/3≤(1.3-3x)/2
(1.8-8x)﹣4(5x-0.4)≤6(1.3-3x)
-10x≤4.4
x≥0.44

答

(9-40x)/60-(100x-8)/60≤(39-90x)/60
(9-40x)-(100x-8)≤(39-90x)
9-40x-100x+8≤39-90x
17-140x≤39-90x
17-39≤140x-90x
-22≤50x
x ≥ -4.4

答

1.8-8x-20x+1.610x>=1.8+1.6-7.8
10x>=-4.4
x>=-0.44