怎样简便怎样算 第一题:2/9*4/7+7/9除以7/4 第二题:1/10+3/4除以5/6 第三题:2/3除以(5/6+1/4)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 22:46:25
![怎样简便怎样算 第一题:2/9*4/7+7/9除以7/4 第二题:1/10+3/4除以5/6 第三题:2/3除以(5/6+1/4)](/uploads/image/z/132142-22-2.jpg?t=%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E6%80%8E%E6%A0%B7%E7%AE%97+%E7%AC%AC%E4%B8%80%E9%A2%98%EF%BC%9A2%2F9%2A4%2F7%2B7%2F9%E9%99%A4%E4%BB%A57%2F4+%E7%AC%AC%E4%BA%8C%E9%A2%98%EF%BC%9A1%2F10%2B3%2F4%E9%99%A4%E4%BB%A55%2F6+%E7%AC%AC%E4%B8%89%E9%A2%98%EF%BC%9A2%2F3%E9%99%A4%E4%BB%A5%EF%BC%885%2F6%2B1%2F4%EF%BC%89)
怎样简便怎样算 第一题:2/9*4/7+7/9除以7/4 第二题:1/10+3/4除以5/6 第三题:2/3除以(5/6+1/4)
怎样简便怎样算 第一题:2/9*4/7+7/9除以7/4 第二题:1/10+3/4除以5/6 第三题:2/3除以(5/6+1/4)
怎样简便怎样算 第一题:2/9*4/7+7/9除以7/4 第二题:1/10+3/4除以5/6 第三题:2/3除以(5/6+1/4)
1
(2/9 * 4/7 + 7/9)/(7/4) = (2/9 * 4/7)/(7/4) + (7/9)/(7/4) = 32/441 + 4/9 = 76/141
2
(1/10 + 3/4)/(5/6) = (1/10)/(5/6) + (3/4)/(5/6) = 3/25 + 9/10 = 51/50
3
(2/3)/(5/6+1/4)= (2/3)/(11/12) = 8/11