一道计算题 0.2[5/6除以(0.15+20/9)]
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一道计算题 0.2[5/6除以(0.15+20/9)]
快 再线等待
快 再线等待
![一道计算题 0.2[5/6除以(0.15+20/9)]](/uploads/image/z/4794473-65-3.jpg?t=%E4%B8%80%E9%81%93%E8%AE%A1%E7%AE%97%E9%A2%98+0.2%5B5%2F6%E9%99%A4%E4%BB%A5%EF%BC%880.15%2B20%2F9%EF%BC%89%5D)
0.2[5/6除以(0.15+20/9)]
=0.2*[5/6÷427/180]
=1/5*5/6*180/427(约分)
=30/427
如果是0.15+9/20的话
0.2[5/6除以(0.15+9/20)]
=0.2*[5/6÷3/5]
=1/5*5/6*5/3(约分)
=5/18
=0.2*[5/6÷427/180]
=1/5*5/6*180/427(约分)
=30/427
如果是0.15+9/20的话
0.2[5/6除以(0.15+9/20)]
=0.2*[5/6÷3/5]
=1/5*5/6*5/3(约分)
=5/18