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{4x-y=5{3x + 2y = 12​ Смотреть ответ 0ffline 0ffline Ответ: {4x-y=5 {3x+2y=12; {y=-5+4x {3x+2y=12; 3x+2(-5+4x)=12; x=2; y=-5+4×2; y=3; (x,y)=(2,3); {4×2-3=5 {3×2+2×3=12; {5=5 {12=12; (x,y)=(2,3). Новые вопросы в Другие предметы Ты найдешь меня в голове,В мозгу, где мысли живут и текут.Я помогаю тебе любить,И связываю сердца людей вместе. P.S: В ответе одно слово Подсказка: в … слове 11 букв, слово русское, написано маленькими буквами, в слове есть буквы: «А» и «О». Это слово вы врядли употребляли в повседневной жизни (дам 100 баллов) Марк, Джим и Боб работали в одном офисе менеджерами. Одного из сотрудников уволили, другого сделали заместителем директора, а третий хотел уйти, но п … ередумал и остался. Мы знаем, что тот, кого уволили, старше других и не женат. Джим младше того, кто остался работать, и не знаком с женой Боба. ОПРЕДЕЛИТЕ, КОГО УВОЛИЛИ, КОГО ПОВЫСИЛИ И ТОГО, КТО ОСТАЛСЯ НА ПРЕЖНЕЙ ДОЛЖНОСТИ. Помогите пожалуйста Мужчина зашёл в магазин и спросил цену на товар. — один стоит 3 рубля — восемь — 3 рубля - — тринадцать — 6 рублей - сто двадцать один – 9 рублей. Что … покупал мужчина? Найкращі лучники після змагання у Нотингемі мали стати Допоможіть зробити твір-думку на це питання, дякуюЧому досягають щастя Марі, героїня повісті-казки Е.-Т.-А. Гофмана «Лускунчик і Мишачий король», і По … лліанна з однойменного роману Е. Портер? 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, у вас есть два разных запроса в этом сообщении. Первый касается системы уравнений, а второй — головоломки с увольнением и повышением. Давайте начнем с первого.

1. Решение системы уравнений: Система уравнений:

1. 4x - y = 5
2. 3x + 2y = 12

Чтобы найти значения x и y, решим эту систему уравнений. Сделаем это методом подстановки.

Из первого уравнения выразим y: 4x - y = 5 y = 4x - 5

Подставим это значение y во второе уравнение: 3x + 2(4x - 5) = 12 3x + 8x - 10 = 12 11x - 10 = 12 11x = 22 x = 2

Теперь найдем y, подставив x в одно из исходных уравнений: y = 4x - 5 y = 4(2) - 5 y = 8 - 5 y = 3

Таким образом, решение системы уравнений: x = 2 y = 3

Теперь перейдем ко второму запросу:

2. Головоломка с увольнением и повышением: Мужчина зашёл в магазин и купил арбуз за 50 рублей, хотя дома у него уже был арбуз, который стоил 25 рублей. Сумма, которую он заплатил за оба арбуза, составила 75 рублей.

Ответ: Арбуз у мужчины и стоил 25 рублей, и был старым, но в магазине он решил купить новый арбуз за 50 рублей, поэтому общая стоимость двух арбузов составила 75 рублей.