Question

{x-2y=10{2x+3y=6решите систему плиз20 балов дам​ Смотреть ответ yutina yutina Ответ:Х=6, у=-2Объяснение:{x-2y=10{2x+3y=6Умножаем первое уравнение на 2, второе на -12х-4у=20-2х-3у=-62х-4у-2х-3у=14-7у=14У=-2Х-2×(-2)=10Х+4=10Х=6 Новые вопросы в Алгебра ДОПОМОЖІТЬ!! даю 15 балів ​ ‼️‼️ТЕРМІНОВО, ДУЖЕ ПОТРІБНО, ВІДДАЮ ВСЕ ЩО Є Якщо a &gt; b i v &gt; d, тоді а + с &gt; b + d Нерівності одного змісту можна додавати Розглянемо два п … риклади Приклад: 1. Відомо, що 1,2 &lt; Х &lt; 1,3 і 17 &lt; у &lt; 18 Оцінити Х + у При додаванні подвійних нерівностей однакового змісту, отримаємо нерівність того ж змісту (тобто знаки не зміняться) 1,2 &lt; Х &lt; 1,3 + 17 &lt; у &lt; 18 __________18,2 &lt; Х + у &lt; 19,32. відомо, що 1,2 &lt; х &lt; 1.3 і 17 &lt; у &lt; 18оцінити х-помноживши всі частини подвійної нерівності 17 &lt; у &lt; 18 на -1, і помінявши знаки нерівності, отримаємо нерівність протилежного змісту17 &lt; у &lt;18 • ( -1 ) 17 • (-1) &gt; у • (-1) &gt;18 • (-1) - 17 &gt;-у&gt;-18 -18&lt;-у&lt;-17 додамо першу нерівність з отриманою ‼️ПРОДОВЖЕННЯ В ФОТО‼️​ ребят, я не понимаю задание, напишите пожалуйста объяснение (что надо делать) и решение, пожалуйста ​ ПОМОГИТЕ ПОЖАЛУЙСТА !!! Помогите, срочно надо Предыдущий Следующий Вместе мы знаем больше Этот сайт использует cookies Политика Cookies . Вы можете указать условия хранения и доступ к cookies в своем браузере. 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Answer 1

Я могу помочь вам решить систему уравнений методом подстановки. Вот подробное объяснение:

Дана система уравнений:

{x-2y=10 {2x+3y=6

Для решения этой системы методом подстановки, нужно выразить одну из переменных через другую из одного из уравнений, а затем подставить полученное выражение в другое уравнение. Таким образом, мы получим уравнение с одной переменной, которое можно решить.

Например, из первого уравнения можно выразить x через y:

x-2y=10 x=10+2y

Теперь подставим это выражение во второе уравнение вместо x:

2x+3y=6 2(10+2y)+3y=6 20+4y+3y=6 7y=-14 y=-2

Мы нашли значение y. Чтобы найти значение x, нужно подставить y в любое из исходных уравнений. Например, в первое:

x-2y=10 x-2(-2)=10 x+4=10 x=6

Мы нашли значение x. Таким образом, решение системы уравнений:

x=6, y=-2

Это можно записать в виде упорядоченной пары:

(6, -2)

Это также является координатами точки пересечения графиков уравнений системы. Вы можете проверить свой ответ, построив графики уравнений с помощью онлайн-калькуляторов, например, [здесь](https://www.mathway.com/Calculator/solve-by-substitution-calculator) или [здесь](https://ru.symbolab.com/solver/system-of-equations-calculator).

Надеюсь, это было полезно для вас. Если у вас есть еще вопросы, я буду рад помочь.