Предмет: Алгебра, автор: sjxzjjfjjdjsjejif

прошу помочь ))))))(((((((((​

Приложения:
Ифигения: х=2, у=5.

Ответы

Автор ответа: mschurkina
0

y - 2х = 1

7х - у = 9

у = 2х + 1

7х - 2х - 1 = 9

5х = 10

х = 2

у = 2х + 1 = 5

sjxzjjfjjdjsjejif: спасибо большое
Автор ответа: vrvrvrvr1234
0

Ответ:

Объяснение:

из 1 выражения получаем y=1+2x

подставляем во 2 выражение

7x-1-2x=9

5x=10

x=2

y=1+2x=1+4=5

sjxzjjfjjdjsjejif: спасибо
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