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Рещите срочно {2(х-у) +1=3х-4у{10-4(х+у)=3у-3хдолжно получиться (3:1) Смотреть ответ myulechka myulechka {2(х-у)+1=3х-4у {10-4(х+у)=3у-3х решаем 1-ое уравнение {2х-2у+1=3х-4у {4у-2у+1=3х-2х 2у+1=х подставляем во 2-ое уравнение 10-4(2у+1+у)=3у-3(2у+1) 10-4(3у+1)=3у-6у-3 10-12у-4=-3у-3 6+3=12у-3у 9у=9 у=1 х=2*1+1=3 Новые вопросы в Математика 120÷(30-18)+4×8-18÷(5-2)​ Найдите остаток от деления 32467^7777 на 7. Помогите пожалуйста. пожалуйста мне срочно нужно решить!!!! даю 30 баллов!!!!!​ Раскройте скобки и найдите значение выражения Раскройте скобки и найдите значение выражения Предыдущий Следующий Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . Вы можете указать условия хранения и доступ к cookies в своем браузере. 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Answer 1

Похоже, вы задали несколько вопросов и просите решение некоторых математических задач. Давайте рассмотрим их по очереди:

1. Решение системы уравнений:

scssCopy code
{ 2(х-у) + 1 = 3х - 4у
{ 10 - 4(х+у) = 3у - 3х

Вы уже решили данную систему уравнений и получили ответ:

Copy code
х = 3
у = 1

Подставив значения х и у в уравнения, мы видим, что система уравнений выполняется.

2. Задача: 120÷(30-18)+4×8-18÷(5-2)

Для решения данного выражения, сначала выполняем операции в скобках:

Copy code
30 - 18 = 12
5 - 2 = 3

Теперь подставляем эти значения обратно в исходное выражение и выполняем операции:

Copy code
120 ÷ 12 + 4 × 8 - 18 ÷ 3
= 10 + 32 - 6
= 36

Ответ: 36

3. Задача: Найти остаток от деления 32467^7777 на 7.

Для нахождения остатка от деления большого числа на другое число, используем теорему остатков:

a^φ(n) ≡ 1 (mod n), где а - целое число, n - натуральное число, φ(n) - функция Эйлера для n.

Функция Эйлера для n вычисляется как φ(n) = n * (1 - 1/p1) * (1 - 1/p2) * ... * (1 - 1/pk), где p1, p2, ..., pk - простые делители числа n.

В данном случае, число 7 - простое, поэтому φ(7) = 7 * (1 - 1/7) = 6.

Теперь, находим остаток от деления 32467^7777 на 6:

7777 % φ(7) = 7777 % 6 = 5

Теперь, находим остаток от деления 32467 на 7:

32467 % 7 = 4

И, наконец, находим остаток от деления 32467^7777 на 7:

4^5 % 7 = 1024 % 7 = 3

Ответ: 3.

Пожалуйста, обратите внимание, что остаток от деления 32467^7777 на 7 - это различие между 7 и полученным значением (7 - 3 = 4).

Если у вас возникнут дополнительные вопросы, не стесняйтесь задавать. Удачи!