Запиши в поле ответа верное число (целое или дробное). Пиши дроби, используя символ «/». \displaystyle (\frac{3}{4}:\frac{1}{2}-\frac{3}{4}):\frac{3}{4}=(

Question

Запиши в поле ответа верное число (целое или дробное). Пиши дроби, используя символ «/».
 
 ﻿﻿\displaystyle (\frac{3}{4}:\frac{1}{2}-\frac{3}{4}):\frac{3}{4}=﻿( 
 4
 3
 ​
 : 
 2
 1
 ​
 − 
 4
 3
 ​
 ): 
 4
 3
 ​
 =﻿
 
 ﻿\displaystyle \frac{3}{20}:(\frac{7}{10}-\frac{1}{5}\cdot\frac{1}{2})= 
 20
 3
 ​
 :( 
 10
 7
 ​
 − 
 5
 1
 ​
 ⋅ 
 2
 1
 ​
 )=﻿
 
 ﻿\displaystyle \frac{3}{8}:\frac{1}{4}-\frac{6}{7}:\frac{9}{14}= 
 8
 3
 ​
 : 
 4
 1
 ​
 − 
 7
 6
 ​
 : 
 14
 9
 ​
 =﻿
 
 ﻿\displaystyle \frac{3}{8}\cdot\frac{8}{9}+\frac{5}{9}:\frac{5}{6}-\frac{5}{8}\cdot\frac{4}{15}= 
 8
 3
 ​
 ⋅ 
 9
 8
 ​
 + 
 9
 5
 ​
 : 
 6
 5
 ​
 − 
 8
 5
 ​
 ⋅ 
 15
 4
 ​
 =﻿

Accepted Answer

(3/4 * 1/2 – 3/4)/(3/4) = (3/4) * (1/2 – 1)/(3/4) = -1/2.

(3/20)/(7/10 – (1/5) * 1/2) = (3/20)/(7/10 – 1/10) = (3/20)/(6/10) = (3/20) * (10/6) = 3/12 = 1/4.

(3/8)/(1/4) – (6/7)/(9/14) = (3/8) * (4/1) – (6/7) * (14/9) = (3/2) – (4/3) = (9/6) – (8/6) = 1/6.

(3/8) * (8/9) + (5/9)/(5/6) – (5/8) * (4/15) = (1/3) + (2/3) – (1/6) = 1 – (1/6) = 5/6.

Ответы1