Question

Помогите плиз!Реши задачу уравнением.папе 35 лет. Сыну 7 лет. Через сколько лет папа будет в два раза старше сына?

Answer 1

через х лет папа будет в два раза старше сына

2 * (7 + х) = 35 + х

14 + 2х = 35 + х

2х - х = 35 - 14

х = 21
Проверка: 35 + 21 = 56 лет будет папе

                    7 + 21 = 28 лет будет сыну

                    56 : 28 = 2 - в два раза папа старше сына

Ответ: через 21 год папа будет в два раза старше сына.

Answer 2

Problem Analysis

To solve this problem, we need to find the number of years it will take for the father to be twice as old as the son. Let's assume that it will take 'x' years for this to happen.

Solution

Let's set up an equation using the given information. We know that the father is currently 35 years old and the son is 7 years old. After 'x' years, the father will be twice as old as the son.

So, we can write the equation as:

35 + x = 2 * (7 + x)

Now, let's solve this equation to find the value of 'x'.

35 + x = 14 + 2x

35 - 14 = 2x - x

21 = x

Therefore, it will take 21 years for the father to be twice as old as the son.

Answer

It will take 21 years for the father to be twice as old as the son.