rozwiąż układ równań
x-y=1+x
1-y=x+y
Bardzo prosze :P
x-x-y=1
-y-y-x=-1
-y=1 /:(-1)
-2y-x=-1
y=-1
2-x=-1
x=3
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x-y=1+x
1-y=x+y
x-x-y=1
-y-y-x=-1
-y=1 /:(-1)
-2y-x=-1
y=-1
2-x=-1
y=-1
x=3