(-3/7)×(-0.125)×1/18×|-80|怎么做
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![(-3/7)×(-0.125)×1/18×|-80|怎么做](/uploads/image/z/168870-30-0.jpg?t=%28-3%2F7%29%C3%97%28-0.125%29%C3%971%2F18%C3%97%7C-80%7C%E6%80%8E%E4%B9%88%E5%81%9A)
(-3/7)×(-0.125)×1/18×|-80|怎么做
(-3/7)×(-0.125)×1/18×|-80|怎么做
(-3/7)×(-0.125)×1/18×|-80|怎么做
(-3/7)×(-0.125)×1/18×|-80|
=3/7*1/8*1/18*80
=(3*10)/(7*18)
=5/21
﹙-3/7﹚×﹙-1/8﹚×1/18×80
=3/56×1/18×80
=5/21