Question

Коля на 2 года старше Вовы,а Лена моложе Коли на 3 года.Возраст Коли,Вовы и лены вместе составляет 37 лет.Сколько лет Вове? Тут должно решение быть уравнением

Answer 1

х - возраст Вовы,

(х+2) - возраст Коли

((х+2)-3) - возраст Лены

х+(х+2)+(х+2-3)=37

откроем скобки: х+х+2+х+2-3=37

3х+3=37

3х=37-1

3х=36

х=36:3

х=12

12 лет Вове;  12+2=14 лет Коле;  12+2-3=11 лет Лене

Answer 2

Пусть Вове  - х лет, тогда
Коле х + 2 
Лене х + 2 - 3 
х + х + 2 + х + 2 - 3 = 37
3х = 37 - 2 + 1
3х = 36
х = 36/3
х = 12

Answer 3

Problem Analysis

We are given the following information: - Kolya is 2 years older than Vova. - Lena is 3 years younger than Kolya. - The sum of their ages is 37 years.

We need to determine Vova's age.

Solution

Let's assign variables to represent the ages of Kolya, Vova, and Lena. We'll use the following variables: - K: Kolya's age - V: Vova's age - L: Lena's age

Based on the given information, we can write the following equations: 1. K = V + 2 (Kolya is 2 years older than Vova) 2. L = K - 3 (Lena is 3 years younger than Kolya) 3. K + V + L = 37 (The sum of their ages is 37 years)

We can solve this system of equations to find the values of K, V, and L.

Solving the Equations

Let's substitute the values from equation 1 into equation 2: V + 2 - 3 = L V - 1 = L

Now, let's substitute the values from equations 1 and 2 into equation 3: (V + 2) + V + (V - 1) = 37 3V + 1 = 37 3V = 36 V = 12

Therefore, Vova is 12 years old.

Answer

Vova is 12 years old.