此方程无解,解答如下:
0.5/0.2x-0.5+1.5=0.2/0.5+0.4x解:5/2x+1=5/2+0.4x5/2x-0.4x=2.5-15-0.8x=5x-2x5=3.8xx=38/5(三十八分之五)