Предмет: Алгебра, автор: pavkov1969

Решить систему способом подстановки x+y = 18 2x+5y = 5 СРОЧНо!!!!!!

Ответы

Автор ответа: Evgenia4836

Ответ:

(85/3; -31/3)

Объяснение:

x=18-y

2(18-y)+5y=5

x=18-y

36-2y+5y=5

x=18-y

3y=-31

y= -31/3

x= 85/3

pavkov1969: Спасибо!!!!!!!!!

pavkov1969: Очень признателен! Можно сказать жизь спасаете)))

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