Question

В полдень по сравнению с утром температура воздуха изменилась на +2*С, к вечеру -на -3*С , к полуночи - еще на - 2*С и она стала равна - 4*С .Какой была температура воздуха утром?(плиз с решением )

Answer 1

Х -  утром.
 х + 2 - 3 - 2 = -4
х = -4 - 2 + 3 + 2
 х = -1
проверка:   -1 + 2 - 3 - 2 = -4
                                    -4 = -4

Answer 2

Problem Analysis

We are given the following information about the change in temperature throughout the day: - The temperature increased by 2°C at noon compared to the morning. - The temperature decreased by 3°C in the evening compared to noon. - The temperature decreased by an additional 2°C at midnight compared to the evening, and it became -4°C.

We need to find the temperature in the morning.

Solution

Let's assume the temperature in the morning is represented by x.

According to the given information: - Temperature at noon = x + 2°C - Temperature in the evening = (x + 2°C) - 3°C = x - 1°C - Temperature at midnight = (x - 1°C) - 2°C = x - 3°C

We are also given that the temperature at midnight is -4°C.

So, we can set up the equation: x - 3°C = -4°C

Solving this equation will give us the value of x, which represents the temperature in the morning.

Calculation

Let's solve the equation:

x - 3°C = -4°C

Adding 3°C to both sides of the equation:

x - 3°C + 3°C = -4°C + 3°C

x = -1°C

Answer

The temperature in the morning was -1°C.

Please let me know if I can help you with anything else.