0.03分之1.8-8x-2分之1.3-3x=0.3分之5x-0.4

分类: 作业答案 • 2022-04-17 22:40:09

问题描述：

答

(1.8-8x)/0.03-(1.3-3x)/2=(5x-0.4)/0.3
100(1.8-8x)/3-(1.3-3x)/2=10(5x-0.4)/3
两边乘以6
360-1600x-3.9+9x=100x-8
1691x=364.1
x=3641/16910

答

80-11x-13/20=50x/3-4/10
-->x=717/332

答

(1.8-8x)/0.03-(1.3-3x)/2=(5x-0.4)/0.3
100(1.8-8x)/3-(1.3-3x)/2=10(5x-0.4)/3
360-1600x-3.9+9x=100x-8
1691x=364.1
x=3641/16910