Question

Али,Соли и Вали решили определить свой вес.Али вместе с Соли вдвоем весили 57 кг,вес Вали вместе с Соли составил 56 кг и Али вместе с Вали-61 кг.Сколько весит каждый.Математика 5 класс Б.Хайдаров.Помогите решить пожалуйста.

Answer 1

57+56+61=174 кг  двойной вес троих
174:2=87кг весят все трое
87-57=30кг весит Вали
56-30=26кг весит Соли
61-30=31кг весит Али

Answer 2

? кг-Али
? кг-Соли
? кг-Вали
57 кг-Али и Соли
56 кг-Соли и Вали
56-(57-Х) = Х+56-(57-Х)= 61
Х+56-57+Х=61
2Х-1=61
2Х=62
Х= 62:2=31 (кг)
Ответ: Али - 31 кг, Соли - 26 кг, Вали - 30 кг.

Answer 3

Problem Analysis

We are given the weights of three individuals: Ali, Soli, and Vali. Ali and Soli together weigh 57 kg, Vali and Soli together weigh 56 kg, and Ali and Vali together weigh 61 kg. We need to determine the weight of each individual.

Solution

Let's assume the weight of Ali is A kg, the weight of Soli is S kg, and the weight of Vali is V kg.

From the given information, we can form the following equations:

1. Ali + Soli = 57 kg 2. Vali + Soli = 56 kg 3. Ali + Vali = 61 kg

We can solve these equations simultaneously to find the values of A, S, and V.

Solving the Equations

To solve the equations, we can use the method of substitution or elimination. Let's use the method of substitution.

From equation 1, we can express Ali in terms of Soli: Ali = 57 - Soli

Substituting this value of Ali in equation 3, we get: (57 - Soli) + Vali = 61 Vali = 61 - 57 + Soli Vali = 4 + Soli

Substituting the values of Ali and Vali in equation 2, we get: (4 + Soli) + Soli = 56 2Soli = 56 - 4 2Soli = 52 Soli = 52 / 2 Soli = 26

Now, substituting the value of Soli in equation 1, we get: Ali + 26 = 57 Ali = 57 - 26 Ali = 31

Finally, substituting the values of Ali and Soli in equation 3, we get: 31 + Vali = 61 Vali = 61 - 31 Vali = 30

Answer

Based on the calculations, we have determined the weights of each individual: - Ali weighs 31 kg. - Soli weighs 26 kg. - Vali weighs 30 kg.

Please note that these calculations are based on the given information and assumptions made.