Question

реши с помощью уравнения задачу; продолжительность дня с 7 октября до 19 ноября уменьшилась на 3 часа и стало 8 часов. Какова была продолжительность дня 7 октября?

Answer 1

всё очень легко!!!

x-3=8

Answer 2

Problem Analysis

To solve this problem, we need to find the duration of the day on October 7th. We are given that the duration of the day from October 7th to November 19th decreased by 3 hours and became 8 hours.

Solution

Let's assume the duration of the day on October 7th is x hours.

From October 7th to November 19th, the duration of the day decreased by 3 hours and became 8 hours. This can be represented as the equation:

x - 3 = 8

To find the value of x, we can solve this equation.

Solving the Equation

To solve the equation, we can add 3 to both sides:

x - 3 + 3 = 8 + 3

Simplifying the equation:

x = 11

Therefore, the duration of the day on October 7th was 11 hours.

Answer

The duration of the day on October 7th was 11 hours.