Решите пожалуйста систему уравнений
{x+y=11
{2x-y=-5
Смотреть ответ kbkgugl kbkgugl X+y=11 ×(-2)
2x-y=-5
-2x+2y=-22
2x-y=-5
y=-27
x+(-27)=11
x=27+11
x=38
(38;11)
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