简便运算(8⼀9-5⼀6)÷(1⼀6+2⼀3)=? 25⼀24÷[(15⼀8-3⼀4)×20⼀27]=要过程

2024-10-28 03:51:45
推荐回答(3个)
回答1:

  1. (8/9-5/6)÷(1/6+2/3)

  =(8/9-5/6)÷5/6

 腔帆蚂 =8/9×6/5-1

  =16/15-1

 伍埋 轿仔=1/15

  25/24÷[(15/8-3/4)×20/27]

=25/24÷[(15/8-6/8)×20/27]

=25/24÷(9/8×20/27)

=25/24×8/9×27/20

=5/4

回答2:

(8/9-5/6)÷(1/6+2/3)
=(8/9-5/6)÷(1/6+4/6)
=(8/9-5/6)÷5/6
=8/9÷5/6-5/6÷5/6
=8/逗培9×6/5-1
=16/15-1
=1/山闷唯罩枯15

25/24÷[(15/8-3/4)×20/27]
=25/24÷[(15/8-6/8)×20/27]
=25/24÷(9/8×20/27)
=25/24÷5/6
=25/24×6/5
=5/4

回答3:

1/15
5/4