Вопрос:
1) {3x - y = 3, (3x - 2y = 0.
Смотреть решения всех заданий с листаОтвет:
Решение:
- Из второго уравнения выразим y:
3x - 2y = 0
3x = 2y
y = 3x / 2
- Подставим значение y в первое уравнение:
3x - (3x / 2) = 3
(6x - 3x) / 2 = 3
3x / 2 = 3
3x = 6
x = 2
- Подставим значение x во второе уравнение:
3(2) - 2y = 0
6 - 2y = 0
6 = 2y
y = 3
Ответ: x = 2, y = 3
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