Question

Брат за неделю получил 5 пятерок.это на 7 пятерок меньше,чем его сестра.сколько пятерок получили брат и сестра за неделю вместе?

Answer 1

5+7=12 пятёрок получила сестра.
12+5=17 пятёрок они получили вместе

Answer 2

7+5=12 (пятёрок) - получила сестра
12+5=17 (пятёрок) - получили брат и сестра за неделю вместе
Ответ : 17 пятёрок

Answer 3

Problem Analysis

We are given that a brother received 5 top grades (пятерок) in a week, which is 7 fewer than his sister. We need to determine the total number of top grades received by the brother and sister together.

Solution

Let's assume the sister received x top grades in a week. According to the given information, the brother received 7 fewer top grades than his sister, so he received (x - 7) top grades.

To find the total number of top grades received by the brother and sister together, we add their individual counts:

Total top grades = (x - 7) + x

Simplifying the expression:

Total top grades = 2x - 7

Therefore, the brother and sister received a total of 2x - 7 top grades together.

Answer

The brother and sister received a total of 2x - 7 top grades together.

Please note that we don't have the specific value of x, so we cannot determine the exact number of top grades received by the brother and sister.