Răspuns :
x+y = 53
x-y = 33
------------(+) folosesc metoda reducerii
2x / = 86
x = 86:2
x = 43
de unde 43+y =53 => y = 53-43 => y = 10
x+y = 53
x-y = 33
------------(+) folosesc metoda reducerii
2x / = 86
x = 86:2
x = 43
de unde 43+y =53 => y = 53-43 => y = 10