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]=

2024-12-03 22:47:20
推荐回答(2个)
回答1:

(8/9-5/6)÷(1/6+2/3)=(8/9)/(5/6)-(5/6)/(5/6)=一又二十七分之二十,144/125

回答2:

(8/9-5/6)÷(1/6+2/3)
=(1-1/9-1+1/6)÷(1/6+4/6)
=(1/9+1/6)÷5/6
=5/18÷5/6
=1/3
25/24÷[(15/8-3/4)×20/27]=
= 25/24÷[(15/8×20/27)-3/4)×20/27)]
= 25/24÷[25/18-5/9]
= 25/24÷15/18
=5/4