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y-druga liczba
x+y=4120
x-y=1280
2x=2840/2
x=1420
1420+y=4120
y=2700
4120:2=2060
1280:2=640
2060+640=2700
2060-640=1420
sposób.2
(4120+1280):2=2700
(4120+1280):2=1420
Odp>>>te liczby to 2700 i 1420