Решите систему уравнений 3x-у=-8 2х-у=-5 - Znanija.Site

Решите систему уравнений
3x-у=-8
2х-у=-5
- Предмет:
  Алгебра
- Автор:
  sailormcpherson
- 5 лет назад

Ответы 1

х=-8+у/3
2х-у=-5
2*-8+у/3-у=-5
у=-1
2х-(-1)=-5
х=-3
(х , у)=(-3 , -1)
3*(-3)-(-1)=-8
2*(-3)-(-1)=-5
-8=-8
-5=-5
(х , у)=(-3 , -1)
- Автор:
  bobbieq7wo
- 5 лет назад
- 0
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