Предмет: Математика, автор: Ден2312312

Найдите решение системы уравнений х-у=9 х+у=29

Ответы

Автор ответа: derf111

х-у=9

х+у=29

x-y-x-y=9-29

-2y=-20

y=10

x=19

Ден2312312: спасибо

ХЕЛИКОПТЕР: не за что

Автор ответа: ХЕЛИКОПТЕР

Вот решение системы способом подстановки. Удачи :)

Приложения:

Ден2312312: спасибо

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