Question

Папе 30 лет ,сыну 3 года.Сколько им будет через 45 лет?Сделать уровнение.

Answer 1

Пусть через x лет - отец будет втрое старше сына. 
Тогда (4+x) - будет сыну 
(30+x)- будет отцу. 
x+30=3(x+4) 
x+30=3x+12 
3x-x=-12+30 
2x=18 
x=9- через 9 лет. 
оу, пардон. Про систему не увидела вот

Answer 2

Problem Analysis

We are given that the father is 30 years old and the son is 3 years old. We need to determine their ages after 45 years. To solve this problem, we can set up an equation using the given information.

Solution

Let's assume the father's age after 45 years is represented by F and the son's age after 45 years is represented by S.

According to the given information, the father is currently 30 years old, so after 45 years, his age will be F = 30 + 45.

Similarly, the son is currently 3 years old, so after 45 years, his age will be S = 3 + 45.

Therefore, the father's age after 45 years will be F = 75 and the son's age after 45 years will