Răspuns :
x+y=7519
x-y=4985, atunci rezulta x=7519-y inlocuind in ecuatia a 2a avem
7519-y-y=4985, rezulta 2y=7519-4985, 2y= 2534, y= 2534/2=1267
x+1267=7519, rezulta x=7519-1267, x= 6252
x-y=4985, atunci rezulta x=7519-y inlocuind in ecuatia a 2a avem
7519-y-y=4985, rezulta 2y=7519-4985, 2y= 2534, y= 2534/2=1267
x+1267=7519, rezulta x=7519-1267, x= 6252