Очень!!! Срочно!!! Помогите решить 1128 а)!. Created by StArKInDeStRiS. matematika-ru

1128а) Приведём к общему знаменателю:- 1 уравнение к 8,- 2 уравнение к 18.Получаем:{24q+8-6a+30q = 8a-27q-22,{18a+54-15a+27q = 54q-6+10a.Приводим подобные:{81q - 14a = -30{-27q - 7a = -60.Второе уравнение умножим на -2:{81q - 14a = -30{54q + 14a = 120._________________135q = 90 q = 90/135 = 2/3. a = (60-27*(2/3))/7 = 42/7 = 6. Реклама Реклама Новые вопросы в Математика площадь квадрата 36 см квадратных,Найди периметр этого квадрата Решить уравнение(x+93,4)-17,4=112,72120+(x-92,6)=142,2 ПОЖАЛУЙСТА СРОЧНО НАДО РЕШЕНИЕ . ПОМОГИТЕ ПОЖАЛУЙСТА СРОЧНО ПОЖАЛУЙСТА СРОЧНО НАДО РЕШЕНИЕ . ПОМОГИТЕ ПОЖАЛУЙСТА а) х:2,7=0,3; в) (m+1,2). 34=61, 2 помогите решить пожалуйсто , задание с решением даю 35 баллов Решите задачу. Во время субботника завод изготовил 150 холодильников, 2/5 было отправлено в больницу, а 60% оставшихся в детский сад. Сколько холодиль … ников отправили в детский сад ? Смешное число запишите неправильно дробью и найдите обратное ему число моторная лодка догоняет плот. Сейчас расстояние между ними 20км.Скорость плота 2,8км/ч, а скорость лодки 10,8км/ч. Через сколько часов лодка догонит п … лот? помогите умоляю!!!!!! Предыдущий Следующий Реклама - это не так уж плохо Реклама - это не так уж плохо Понимаем - вы пришли сюда не за рекламой. Но она помогает нам предоставлять бесплатный доступ к Знаниям. Пожалуйста, внесите наш сайт в список разрешенных. ОК, разблокирую рекламу на Знаниях! 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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Очень!!! Срочно!!! Помогите решить 1128 а)!...

StArKInDeStRiS @StArKInDeStRiS

September 2021 1 41 Report

Очень!!! Срочно!!! Помогите решить 1128 а)!

Answers & Comments

dnepr1

Verified answer

1128а) Приведём к общему знаменателю:
- 1 уравнение к 8,
- 2 уравнение к 18.
Получаем:
{24q+8-6a+30q = 8a-27q-22,
{18a+54-15a+27q = 54q-6+10a.
Приводим подобные:
{81q - 14a = -30
{-27q - 7a = -60.
Второе уравнение умножим на -2:
{81q - 14a = -30
{54q + 14a = 120.
_________________
135q = 90
q = 90/135 = 2/3.
a = (60-27*(2/3))/7 = 42/7 = 6.