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计算下面各题能简算的要简算 5/6-1/2+1/4 5/12+3/4...

5/6-1/2+1/4 =5/6-1/4 =10/12-3/12; =7/12; 5/12+3/4-5/8 =10/24+18/24-15/24 =13/24; 4/5-(3/10+1/6) =24/30-9/30-5/30 =10/30 =1/3; 5/9+7/18+4/9 =(5/9+4/9)+7/18 =1+7/18 =25/18; 1-2/7-5/7 =1-(2/7+5/7) =1-1 =0 2/3+5/13+1/3 =1+5/13 =1...

6/5-2/1+3/1 5/6-1/2+1/3 =(5-3+2)/6 =4/6 =2/3 =3分之2

3/4 7分之5 1/2等于多少 3/4 7分之5 1/2 =21/28+20/28+14/28 =(21+20+14)/28 =55/28

5/6-4/9+1/6-2/9 =(5/6+1/6)-(4/9+2/9) =1-6/9 =3/9 =1/3 扩展资料1、四则混合运算顺序:同级运算时,从左到右依次计算;两级运算时,先算乘除,后算加减。有括号时,先算括号里面的,再算括号外面的;有多层括号时,先算小括号里的,再算中括号...

15×(2/3+3/5) = 15×2/3+15×3/5 =10+9 =19 〖5/6-(1/8+5/12)〗×3/7 =[5/6-13/24]×3/7 =7/24×3/7 =1/8

(1)5/7+5/6+2/7+1/6 =5/7+2/7+5/6+1/6=2 (2)1/15x(1/3+1/12)=1/15x5/12=1/36 (3)1/3+3除以1/2 (4)3.7乘以6/5+1.3除以5/6 (5)1/4除以3-5/13-8/13) (6)0.5乘以(3/5+6/25)

23/24一1/6一3/8 二23/24一4/24一9/24 二19/24一9/24 二10/24 二5/12

2.1+45

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