Question

В концерте участвовали 35 учащихся. 14 танцоров, 7 чтецов, а остальные певцы. сколько было певцов? решил задачу выражением тремя способами.

Answer 1

Способ №1 
Сложим танцоров и чтецов вместе,а потом от общего т.е от всех учащихся относим полученное число 
1) 35-(14+7)= 14
Ответ : 14 певцов было на концерте 

Способ №2
От общего числа учащихся отнимим число танцоров,затем от полученного результата мы отнимим число чтецов 
1) 35-14-7= 14
Ответ : 14 певцов было на концерте 

Способ №3
От общего числа учащихся отнимим число чтецов,затем от полученного результата мы отнимим число танцоров 
1)35-7-14=14
Ответ : 14 певцов было на концерте

Answer 2

Task Solution Using Expressions

To solve the problem of determining the number of singers at the concert, we can use three different expressions.

1. Using Total Number of Participants: - We know that there were 35 participants in total at the concert. - If we subtract the number of dancers (14) and the number of readers (7) from the total, we can find the number of singers.

The number of singers = Total participants - (Number of dancers + Number of readers)

The number of singers = 35 - (14 + 7) = 35 - 21 = 14

Therefore, there were 14 singers at the concert.

2. Using the Number of Dancers and Readers: - We can also calculate the number of singers by subtracting the sum of dancers and readers from the total number of participants.

The number of singers = Total participants - (Number of dancers + Number of readers)

The number of singers = 35 - (14 + 7) = 35 - 21 = 14

Therefore, there were 14 singers at the concert.

3. Using the Number of Dancers and the Remaining Participants: - Alternatively, we can calculate the number of singers by subtracting the number of dancers from the total number of participants, and then subtracting the number of readers from the result.

The number of singers = Total participants - Number of dancers - Number of readers

The number of singers = 35 - 14 - 7 = 35 - 21 = 14

Therefore, there were 14 singers at the concert.

So, using any of these three methods, we find that there were 14 singers at the concert.