Question

3.Решить систему способом подстановки: {4x+y=3 {3x-y=11 Посмотреть ответы OblivionFire OblivionFire Ответ: (х;у)=(2;-5). Пошаговое объяснение: {4х+у=3, у=3-4х. {3х-у=11. 3х-(3-4х)=11 3х-3+4х=11 7х-3=11 7х=11+3 7х=14 х=14÷7 х = 2 у=3-4*2 у=3-8 у = - 5 Ответ : ( 2 ; - 5 ). Artsounds Artsounds Ответ: Решение : Ответ : ( х; y ) = ( 2; -5 ) Проверка : Верно - ✔︎ Новые вопросы в Математика помогите решить уравнение срочно Протягом звітного місяця громадянин Коваленко одержав дохід у вигляді заробітної плати у розмірі 12000 грн. та лікарняні за дні хвороби у сумі 2800 г … рн. Розрахуйте суму ПДФО та військового збору, що підлягає утриманню з доходів громадянина, та суму отриманого доходу після оподаткування. Алиса и боб имеют 48 конфет. Алиса имеет в 3 раза больше чем боб сколько конфет имеет каждый из них?​ Круговой сектор, угол которого равен 270 градусов свернули в коническую поверхность. 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Answer 1

Пошаговое решение системы уравнений с использованием метода подстановки выглядит верным. Давайте проверим результат, подставив найденные значения x и y обратно в исходные уравнения:

Исходные уравнения:

1. 4x + y = 3
2. 3x - y = 11

Мы нашли x = 2 и y = -5. Давайте проверим:

1. Первое уравнение: 4x + y = 3 Заменяем x и y: 4(2) + (-5) = 8 - 5 = 3 Верно.

2. Второе уравнение: 3x - y = 11 Заменяем x и y: 3(2) - (-5) = 6 + 5 = 11 Верно.

Таким образом, результат (x, y) = (2, -5) является верным решением данной системы уравнений.