Ответ:
( 1 ; 1 )
обяснение
y + x = 2
2x - y = 1
y = 2 -x
y=2x-1
x 0 2
y 2 0
x 0 1
y -1 1
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Ответ:
( 1 ; 1 )
обяснение
y + x = 2
2x - y = 1
y = 2 -x
y=2x-1
y = 2 -x
x 0 2
y 2 0
y=2x-1
x 0 1
y -1 1