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九分之5+小括号3/4%2分之一小括号等于多少脱式计算

解:5/9+(3/4-1/2) =5/9+1/4 =20/36+9/36 =29/36

4/5+9/15-2/9 =4/3-2/9 =12/9-2/2 =10/9

5/9-(5/6-7/12) =20/36-(30/36-21/36) =20/36-9/36 =11/36

5/9加括号3/4-1/2 5/9+(3/4-1/2) =5/9+(3/4-2/4) =5/9+1/4 =20/36+9/36 =29/36

5/9-(5/6-7/12) =20/36-(30/36-21/36) =20/36-9/36 =11/36

2/3乘以中括号3/10除以小括号1/3+2/5小括号中括号=2/3*【3/10/(1/3+2/5)】=2/3*【3/10/(11/15)=2/3*9/22=3/11。

1/2-(5/6-3/8) =1/2-(20/24-9/24) =1/2-11/24 =12/24-11/24 =1/24

8/9-(5/6-1/3) =8/9+1/3-5/6 =11/9-5/6 =22/18-15/18 =7/18

六分之5-调括号六分之5减八分之五反括号等于多少脱式计算 (5/6)-(5/6-5/8) =(5/6)-(5/6)+(5/8) =5/8.

(2/3+5/9)*9*13=143

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