Question

Витя придумал 6 выражений со скобками. значение которых равно 15 . а Лена на 2 выражение больше. Поставить вопрос и решить задачу. Сегодня надо. пожайлуста помогите.

Answer 1

Сколько выражений Витя и Лена решили вместе?

6+2=8 выражений решила Лена

6+8=14 выражений решили вместе

Answer 2

Problem Analysis

To solve this problem, we need to find six expressions with parentheses that have a value of 15. Lena has two more expressions than Vitya. We need to formulate a question and solve the problem.

Problem Solving

Let's break down the problem step by step:

1. Vitya came up with six expressions with parentheses, and their total value is 15. 2. Lena has two more expressions than Vitya. 3. We need to find the value of Lena's expressions and the expressions themselves.

Let's denote the number of expressions Vitya came up with as x. Since Lena has two more expressions, Lena's total number of expressions will be x + 2.

Now, let's set up the equation to find the value of Lena's expressions:

15 = (value of Vitya's expressions) + (value of Lena's expressions)

Since Vitya's expressions have a total value of 15, the equation becomes:

15 = 15 + (value of Lena's expressions)

Simplifying the equation, we get:

(value of Lena's expressions) = 0

This means that the value of Lena's expressions is 0.

Now, let's find the expressions themselves. Since Lena has two more expressions than Vitya, we can write the expressions as follows:

Lena's expressions: (0), (0), (0), (0), (0), (0)

Answer

Therefore, the value of Lena's expressions is 0, and the expressions themselves are (0), (0), (0), (0), (0), (0).

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