Ответ:
x=4-y
2 (4-y)-4=2
8-2y-4=2
2y=2
y=1
x=4-1
x=3
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Ответ:
x=4-y
2 (4-y)-4=2
8-2y-4=2
2y=2
y=1
x=4-1
x=3