Предмет: Алгебра, автор: ekaterina122010xx

Розв'язати систему рівнянь способом підстановки: | x-2y = 3 | x+y=-6​

Ответы

Автор ответа: oksanaoleksyn25
1

х=-6+х

х-2(6+х)=3

х-12+2х=3

3х=15

х=5

х+у=6

5+у=6

у=1

ekaterina122010xx: спасибо большое ☺️
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