(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8怎么简算?急
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![(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8怎么简算?急](/uploads/image/z/240584-32-4.jpg?t=%2815%2F56-13%2F42%2B11%2F30-9%2F20%2B7%2F12-1%2F3%29%C3%B71%2F22%C3%9791%C3%B71%2F8%E6%80%8E%E4%B9%88%E7%AE%80%E7%AE%97%3F%E6%80%A5)
(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8怎么简算?急
(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8怎么简算?
急
(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8怎么简算?急
(15/56-13/42+11/30-9/20+7/12-1/3)÷1/22×91÷1/8 =(1/7+1/8-1/7-1/6+1/6+1/5-1/5-1/4+1/4+1/3-1/3) =1/8÷1/22*91÷1/8 =91/22 =4又22分之3