Предмет: Математика, автор: diana261010ggg

помогите пж дам 25баллов

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Автор ответа: saidarifbakhadirkhan

Ответ:

Один из возможных подходов к решению этой системы уравнений: 1. Решите второе уравнение для y: у = 4 - х 2. Подставьте это выражение для y в первое уравнение и упростите: 2/7 * х - 3/14 * (4 - х) - 1/7 = д 4/7 * х - 3/7 - 1/7 = д 2/7 * х = д + 4/7 х = 7/2 * (д + 4/7) 3. Подставим это выражение для x в уравнение y = 4 - x и упростим: у = 4 - 7/2 * (q + 4/7) у = 14/7 - 7/2 * д - 2 у = -7/2 * д + 5/7 4. Убедитесь, что эти значения x и y удовлетворяют обоим уравнениям: 2/7 * (7/2 * (q + 4/7)) - 3/14 * (-7/2 * q + 5/7) - 1/7 = q д + 2/7 - 3/4 * д + 15/28 - 1/7 = д д - д + 2/7 - 3/4 * д + 15/28 - 1/7 = 0 Умножение на наименьшее общее кратное знаменателей дает: 8q + 16 - 21q + 15 - 4 = 0 -13q + 27 = 0 д = 27/13 Следовательно, решение системы уравнений: х = 7/2 * (27/13 + 4/7) = 49/13 у = -7/2 * (27/13) + 5/7 = -62/91 Итак, решение (49/13, -62/91).

saidarifbakhadirkhan: э какие 10 баллов

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