suma dwoch liczb wynosi 89, a ich roznica 57. jakie to liczby
x+y=89
x-y=57
x=89-y
89-y-y=57
-2y=-32
y=16
x=89-16=73
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x+y=89
x-y=57
x=89-y
89-y-y=57
-2y=-32
y=16
x=89-16=73