Question

Задание 2. Решите задачи с помощью уравнений. Для решения задач воспользуйтесь памяткой (Памятка решения текстовых задач уравнением). а) Марина задумала число. Уменьшив его в 7 раз и добавив к результату число 54, девочка получила число 96. Определите, какое число задумала Марина (20 баллов).

Answer 1

Ответ:

294

Пошаговое объяснение:

1)x:7+54=96

2)96-54=42

3)42*7=294

294:7+54=96

96=96

Answer 2

Ответ:

Пошаговое объяснение:

Х÷7+54=96

Х=(96-54)×7=294

Х=294

96-54=42

42×7=294

Answer 3

To solve this problem, we can use algebraic equations. Let's denote the number Marina had in mind as 'x'.

According to the problem, Marina decreased the number by 7 times and then added 54 to the result, which gave her a final number of 96. We can represent this information in the form of an equation:

7x + 54 = 96

To find the value of 'x', we need to isolate it on one side of the equation. Let's solve the equation step by step:

1. Subtract 54 from both sides of the equation: 7x = 96 - 54 7x = 42

2. Divide both sides of the equation by 7 to solve for 'x': x = 42 / 7 x = 6

Therefore, the number Marina had in mind is 6.

Please let me know if you need help with anything else!