.1.2分子1.8-8X-2分子1.3-3X=0.3分子5X-0.4列出公式谢谢啦

2024-12-21 21:00:24
推荐回答(1个)
回答1:

1.8/1.2-8x-1.3/2-3x=5/0.3x-0.4
18/12-8x-13/20-3x=50/3 x-0.4
3/2-11x-13/20=50/3x-0.4
50/3x+11x=2/3-13/20-0.4
(27+2/3)x =2/3-13/20-2/5
83/3 x =(40-39-12)/60=-11/60
x=-11/60 * 3/83 = -11/1660