Предмет: Алгебра, автор: Seras234

решить систему уравнений. метод подстановки. х+у=8, 2х+у=10

Ответы

Автор ответа: sonfabryklinsk

0

Объяснение:

метод підстановки,

2+6=8

2×2+6=10

Приложения:

Автор ответа: parhipkina

0

x+y=8

2x+y=10

y=8-x

2x+y=10

2(8-x)=10

16-2x-10=0

-2x=6

x=-3

y=8-(-3)= 11

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