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括号1/10+1/4括号乘以1/7怎么脱式计算

(1/10+1/4)x1/7 =(2/20+5/20)x1/7 =7/20x1/7 =1/20 希望能帮到你

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

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。

(7/9+5/6-1/4)×72 =7/9×72+5/6×72-1/4×72 =56+60-18 =98

10分之9-(4分之1-10分之1) =10分之9-4分之1+10分之1 =10分之9+10分之1-4分之1 =1-4分之1 =4分之3

24×(1/4+5/6-7/8) =6+20-21 =5

7/8 乘(1-75%)+1/4+0.25 乘 1/8 …… 把小数换算成分数 =7/8 乘 1/4+1/4+1/4 乘 1/8 ……把1/4提出来 =1/4乘(7/8+1+1/8) ……括号里相加为2 =1/4乘2 =1/2 答案:二分之一 望采纳!

1. 1/8*14/8/7 =7/4/8/7 =7/4*7/8 =49/*32 2. 9/14/(6/5-3/4)*7/24 =9/14/9/20*7/24 =9/14*20/9*7/24 =20/14*7/24 =5/12 第三小题题目再发准确点行吗

(1+1/2)(1-1/2)(1+1/3)(1-1/3)……(1+1/99)(1-1/99) =(3/2×4/3×……×100/99)×(1/2×2/3×……×98/99) =100/2×1/99 =50/99

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