Răspuns :
a + b = 1280
5a/8 , b + 215 => a = b
5a/8 = b + 215
5a = 8b + 1720
8b + 1720 + 5b = 6400
13b = 4680 | : 13
b = 360
a = 1280 - 360 = 920
a + b = 1280
5a/8 , b + 215 => a = b
5a/8 = b + 215
5a = 8b + 1720
8b + 1720 + 5b = 6400
13b = 4680 | : 13
b = 360
a = 1280 - 360 = 920