Предмет: Алгебра, автор: KceHNRPeTPOBa

Реши систему:

x=7+y
x-2y+2=4

Ответы

Автор ответа: theend2280
1

Объяснение:

x = 7 + y \\ x - 2y + 2 = 4 \\ \\ x - y = 7 \\ x - 2y = 2

умножим на 2 чтобы избавиться от у.

2x-2y=14

x-2y=2

x=12

12-y=7

y=5

Автор ответа: nepustilipoeta
2

Ответ:

(12;5)

Объяснение:

х-у=7

-х+2у=-2

у=5

х=7+у=12

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