Question

Внук спросил у дедушки : «Сколько тебе лет?». Дедушка ответил : «Если к половине моих лет прибавить 18 лет, то получишь мой возраст 14 лет назад». Сколько сейчас лет дедушке?

Answer 1

x/2+18=x-14 |*2

x+36=2x-28

-x=-64

x=64

 

Answer 2

х/2+18=х-14

х/2-х=-14-32

х=64

64 года дедушке

Answer 3

Problem Analysis

The problem states that a grandson asked his grandfather, "How old are you?" The grandfather replied, "If you add 18 years to half of my age, you will get my age 14 years ago." We need to determine the current age of the grandfather based on this information.

Solution

Let's assume the current age of the grandfather is x.

According to the information given, if we add 18 years to half of the grandfather's age, we will get his age 14 years ago. Mathematically, this can be represented as:

x/2 + 18 = x - 14

To solve this equation, we can start by simplifying it:

x/2 + 18 = x - 14

Multiply both sides of the equation by 2 to eliminate the fraction:

x + 36 = 2x - 28

Now, let's isolate the variable x:

36 + 28 = 2x - x

64 = x

Therefore, the current age of the grandfather is 64 years.

Answer

The current age of the grandfather is 64 years.