Предмет: Алгебра, автор: aristal99

Решите систему!!!!!!!!!!!!

Приложения:

Ответы

Автор ответа: madlyangel

3.5x+2.4y=5.8

0.5x+3.2y=-0.6

умножаем второе уравнение на -7

3.5х+2.4у=5.8

-3.5х-22.4у=4.2

складываем уравнения

-20у=10

у=-0.5

3.5х+2.4×(-0.5)=5.8

3.5х-1.2=5.8

3.5х=7

х=2

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