Предмет: Алгебра, автор: kpac55

система уравнений
{9y+8z=-2
5z=-4y-11
Помогите решить с объяснением​

Ответы

Автор ответа: aurikalie
1

Ответ:

{ 9y+8z=-2

у=-11/4-5/4z

9(-11/4-5/4z)+8z=-2

z=-7

y=-11/4-5/4×(-7)

y=6

Объяснение:

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