Question

Витя придумал 6 выражений со скобками,значение которых равно 15, а Лена придумала на 2 таких выражения больше. Поставь вопрос и реши задачу.

Answer 1

Витя придумал 6 выражений со скобками, значения которых равно 15, а Лена придумала на 2 выражения больше. Сколько всего выражений придумали Лена и Витя?

 

Витя - 6 в.
Лена - ? в., на 2 в. >, чем Витя (стрелка от Лены до Вити)
Сколько всего выражений придумали Лена и Витя?
Решение:
1) 6+2=8 (в.) - придумала Лена.
2) 6+8=14 (в.) - придумали Лена и Витя.
Ответ: 14 выражений придумали Лена и Витя.

Answer 2

Task:

Vitya came up with 6 expressions with parentheses, the value of which is equal to 15, and Lena came up with 2 more such expressions. Let's formulate a question and solve the problem.

Question:

How many expressions with parentheses, the value of which is equal to 15, did Lena come up with, if Vitya came up with 6 such expressions?

Solution:

Let's denote the number of expressions Vitya came up with as V and the number of expressions Lena came up with as L. We know that V = 6 and L = V + 2.

The total number of expressions with parentheses, the value of which is equal to 15, is V + L.

Substituting the values of V and L, we get: V + L = 6 + (6 + 2) = 6 + 8 = 14.

Therefore, Lena came up with 14 expressions with parentheses, the value of which is equal to 15.

Conclusion:

Lena came up with 14 expressions with parentheses, the value of which is equal to 15.