Предмет: Алгебра, автор: pupsikvika254

Розв'яжіть систему рівняння 2(3х-4у)+28=4(у+1)
3(х-у)-у=16-(х+4у)
Пж срочно на контрошу надо

Ответы

Автор ответа: common1schoolboy
0

Ответ:

у=4 х=4

Объяснение:

раскрываем скобки и получаем

6х-8у+28=4у+4х

3х-4у=16-х-4у

6х-8у+28=4у+4х

3х+х=16-4у+4у

6х-8у+28=4у+4х

4х=16

6х-8у+28=4у+4х

х=4

подставим в 1 уравнение х

6*4-8у+28=4у+4

24-8у+28=4у+4

-12у=-48

у=4

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