能简算的要简算一、5/6÷[(11/15-3/5)×5/8] 二、2/3÷9+2/3×8/9 三、(3/5+1/3)÷(7/6×8/35)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 22:07:59
![能简算的要简算一、5/6÷[(11/15-3/5)×5/8] 二、2/3÷9+2/3×8/9 三、(3/5+1/3)÷(7/6×8/35)](/uploads/image/z/100127-47-7.jpg?t=%E8%83%BD%E7%AE%80%E7%AE%97%E7%9A%84%E8%A6%81%E7%AE%80%E7%AE%97%E4%B8%80%E3%80%815%2F6%C3%B7%5B%EF%BC%8811%2F15-3%2F5%EF%BC%89%C3%975%2F8%5D+%E4%BA%8C%E3%80%812%2F3%C3%B79%2B2%2F3%C3%978%2F9+%E4%B8%89%E3%80%81%EF%BC%883%2F5%2B1%2F3%EF%BC%89%C3%B7%EF%BC%887%2F6%C3%978%2F35%EF%BC%89)
能简算的要简算一、5/6÷[(11/15-3/5)×5/8] 二、2/3÷9+2/3×8/9 三、(3/5+1/3)÷(7/6×8/35)
能简算的要简算
一、5/6÷[(11/15-3/5)×5/8] 二、2/3÷9+2/3×8/9 三、(3/5+1/3)÷(7/6×8/35)
能简算的要简算一、5/6÷[(11/15-3/5)×5/8] 二、2/3÷9+2/3×8/9 三、(3/5+1/3)÷(7/6×8/35)
看图片
题目没错吧,
5/6÷[(11/15-3/5)×5/8]=5/6÷[(11/15×5/8-3/5×5/8]=5/6÷[(11/24-3/8]=5/6÷[(11/24-9/24]
=5/6*1/4=10/3
2/3÷9+2/3×8/9=2/3*(1/9+8/9)=2/3
3/5+1/3)÷(7/6×8/35)=(3/5+1/3)*15/4=3/5*15/4+1/3*15/4=9/4+5/4=7/2
1.按常规计算,先算小括号,再算中括号。
2.从左到右依次计算
3.先算两个小括号,再算除法。
望采纳,谢谢!
1.=5/6÷[(11/15-9/15)×5/8] =5/6÷[2/15×5/8] =5/6÷1/12=10
2.=2/3×1/9+2/3×8/9=2/3×(1/9+8/9)=2/3
3.=(3/5+1/3)÷4/15=3/5×15/4+1/3×15/4=9/4+5/4=7/2
.=5/6÷[(11/15-9/15)×5/8] =5/6÷[2/15×5/8] =5/6÷1/12=10
2.=2/3×1/9+2/3×8/9=2/3×(1/9+8/9)=2/3
3.=(3/5+1/3)÷4/15=3/5×15/4+1/3×15/4=9/4+5/4=7/2