Question

Решите с помощью уравнения.1)Оксана задумала число.Если к тому числу прибавить 43 и полученную сумму вычесть из числа 96,то получим число 25.Какое число задумала Оксана?2)у Буратино было 74 сольдо.После того как он купил себе учебники для школы,Папа Карло дал ему 25 сольдо.Тогда у Буратино стало 68 сольдо.Сколько сольдо Буратино потратил на учебники?

Answer 1

1)

х - задуманное число

96 - (х + 43) = 25

х + 43 = 96 - 25

х + 43 = 71

х = 71 - 43

х = 28 - число, которое задумала Оксана;

2)

х сольдо - потрачено на учебники

74 - х + 25 = 68

74 + 25 - 68 = х

х = 31 сольдо - Буратино потратил на учебники.

Answer 2

Problem 1: Оксана задумала число

To solve this problem, we need to set up an equation based on the given information and solve for the unknown number.

Let's assume the unknown number that Оксана has in mind is represented by the variable "x".

According to the problem statement, if we add 43 to the unknown number and then subtract the result from 96, we should get 25.

Mathematically, we can represent this as:

x + 43 = 96 - 25

To find the value of x, we can simplify the equation:

x + 43 = 71

Now, we can isolate the variable x by subtracting 43 from both sides of the equation:

x = 71 - 43

Simplifying further, we get:

x = 28

Therefore, the number Оксана has in mind is 28.

Problem 2: У Буратино было 74 сольдо

To solve this problem, we need to determine how much money Buratino spent on textbooks.

According to the problem statement, Buratino initially had 74 сольдо. After buying textbooks and receiving an additional 25 сольдо from Papa Carlo, Buratino was left with 68 сольдо.

Let's assume the amount of money Buratino spent on textbooks is represented by the variable "x".

Based on the given information, we can set up the equation:

74 - x + 25 = 68

Simplifying the equation, we get:

99 - x = 68

To isolate the variable x, we subtract 99 from both sides of the equation:

-x = 68 - 99

Simplifying further, we get:

-x = -31

To solve for x, we multiply both sides of the equation by -1:

x = 31

Therefore, Buratino spent 31 сольдо on textbooks.

I hope this helps! Let me know if you have any further questions.