Răspuns:
a + b + c + d = 24
a |.........|
b |.........|.....|
+2
c |.........|.....|.....| } 24
+2 +2
d |.........|.....|.....|.....|
+2 +2 +2
1) Egalăm segmentele
24 - ( 2 + 2 + 2 + 2 + 2 + 2) = 12
24 - 12 = 12
2) 12 : 4 = 3
a = 3
b = 3 + 2
b = 5
c = 3 + 2+ 2
c = 7
d = 3 + 2 + 2 + 2
d = 9