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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

=5/7+(3/4+2/7) =5/7+2/7+3/4 =1+3/4 =7/4

3/4-(2/5+3/10) =3/4-7/10 =15/20-14/20 =1/20

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。

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

(4/5+1/10)+3/8 =9/10+3/8 =51/40 =1又11/40

5/6-(3/8+5/12) =20/24-(9/24+10/24) =20/24-19/24 =1/24

2/7÷(3/5+1/3) =2/7÷(9/15+5/15) =2/7÷(14/15) =2/7×15/14 =15/49

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