3/5÷[(0.75-1/2)×2.4]
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3/5÷[(0.75-1/2)×2.4] 结果是13/5÷[(0.75-1/2)×2.4]=0.6÷ [(0.75-0.5)×2.4]=0.6÷(0.25×2.4)=0.6÷0.6=1
咨询记录 · 回答于2023-03-11
3/5÷[(0.75-1/2)×2.4]
3/5÷[(0.75-1/2)×2.4]
3/5÷[(0.75-1/2)×2.4] 结果是13/5÷[(0.75-1/2)×2.4]=0.6÷ [(0.75-0.5)×2.4]=0.6÷(0.25×2.4)=0.6÷0.6=1
可以先把分数都化为小数,然后再计算
5/12:x=1/5:9/20
5/12:x=1/5:9/201/5x= 5/12×9/201/5x=3/16x=3/16÷1/5x=15/16
好的,我计算一下
0.2x-50%=10.50.2x-0.5=10.50.2x=10.5+0.50.2x=11x=11÷0.2x=55
26x=4×1.326x=5.2x=0.2