Question

Помогите Решить Задачу И Составить Выражение По Задаче!!! _______________________________________________________________________________ 1.Одна Бригада Трактористов За День Вспахивает -- а га земли 2.Вторая Бригада - ? на 5 га меньше . Обе Бригады Работали-3 дня. Сколько Гектаров Земли Вспахали Вместе Две Бригады Трактористов? Здесь а=24

Answer 1

(а+а-5)*3=(2а-5)*3=6а-15
при а=24
6*24-15=129 га вместе за три дня

Answer 2

Problem Analysis

To solve this problem, we need to find the total number of hectares of land plowed by two brigades of tractor drivers. We are given that one brigade plows a certain number of hectares, and the second brigade plows 5 hectares less than the first brigade. Both brigades worked for 3 days.

Solution

Let's denote the number of hectares plowed by the first brigade as x. According to the problem, the second brigade plows 5 hectares less than the first brigade, so the number of hectares plowed by the second brigade is x - 5.

Since both brigades worked for 3 days, we need to multiply the number of hectares plowed by each brigade by 3 to get the total number of hectares plowed by each brigade.

The total number of hectares plowed by the first brigade is 3x, and the total number of hectares plowed by the second brigade is 3(x - 5).

To find the total number of hectares plowed by both brigades together, we need to add the number of hectares plowed by each brigade:

Total hectares plowed = 3x + 3(x - 5)

Now we can substitute the given value of x into the equation and calculate the total number of hectares plowed.

Calculation

Given that x = 24, we can substitute this value into the equation:

Total hectares plowed = 3(24) + 3(24 - 5)

Simplifying the equation:

Total hectares plowed = 72 + 3(19) = 72 + 57 = 129

Therefore, the total number of hectares plowed by both brigades together is 129 hectares.

Answer

The total number of hectares of land plowed by both brigades of tractor drivers working for 3 days is 129 hectares.

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