0.2(0.2)/0.01+1.2x=0.12+20x解方程!
问题描述：
0.2(0.2)/0.01+1.2x=0.12+20x解方程!
答
0.04/0.01=0.12+18.8x
18.8x=4-0.12
18.8x=3.88
x=970/47错