Предмет: Алгебра, автор: Tarabletmifik

розв'язати методом додавання
12a+7b=-26
3a-2b=1

Ответы

Автор ответа: dedulja66let
1

Ответ:

Объяснение:

Умножим второе уравнение системы на (-4). Получаем:

\left \{ {{12a+7b= -26} \atop {-12a+8b=-4}} \right.

Сложим первое и второе уравнение:

15b = - 30

b =  - 2

3a - 2·(-2) = 1

3a = -3

a = -1

Tarabletmifik: А можешь написать как єто в тетраде будет выглядеть? Пожалуйста
dedulja66let: У меня нет тетради, работаю на компьютере...
Tarabletmifik: напиши просто, я буду очень блогодарен
dedulja66let: Спиши мое решение в тетрадку, и всё! Какие проблемы???
ganzikovvladislav: Напиши просто как бы ты написал в тетрадь и всё
dedulja66let: Не буду!!!
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