Предмет: Математика, автор: flexnotstop

40 БАЛЛОВ СРОЧНО
решите систему уравнений с 2 перемеными способоми сложения
{2x+5y=-26
{x-3y=2​

Ответы

Автор ответа: miron2077
1

2x+5y=-26

x-3y=2           I*-2

2х+5у=-26

-2х+6у=-4    сложим

11у=-30

у=-30/11=-2 8/11

х=2+3у=2+3(-30/11)=-68/11=-9 2/11

(-6 2/11;-2 8/11)

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