Вопрос по математике
Анонимный
9 месяцев назад

Система уравнений: 2x + y = 7; 2x – y = 1.

Ответы 1

Применим для решения системы уравнения метод сложения. Сложим два уравнения системы и получим уравнение с одной переменной: 2x + 2x + y – y = 7 + 1; 4x = 8; x = 8 : 4; x = 2; y = 7 – 2x = 7 - 2 * 2 = 7 – 4 = 3. (2; 3) решение системы.
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