Ответ:(1;-1),(4;-2)
Объяснение:{2m+n=1, m-n=2, {3m=3,m-n=2; {m=1,n= -1.
{a+b=2,a-b=6; {2a=8,a-b=6; {a=4,b=-2.
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Ответ:(1;-1),(4;-2)
Объяснение:{2m+n=1, m-n=2, {3m=3,m-n=2; {m=1,n= -1.
{a+b=2,a-b=6; {2a=8,a-b=6; {a=4,b=-2.