Вопрос:
529. Solve the system of equations: { 4x - 6y = 26, 5x + 3y = 1.
Смотреть решения всех заданий с листаОтвет:
Решение:
- Умножим второе уравнение на 2:
10x + 6y = 2. - Сложим первое уравнение с новым вторым:
(4x - 6y) + (10x + 6y) = 26 + 2. - Приведем подобные слагаемые:
14x = 28. - Найдем
x: x = 2. - Подставим
x = 2 во второе уравнение: 5(2) + 3y = 1. 10 + 3y = 1.3y = -9.y = -3.
Ответ: x = 2, y = -3
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