B /-----/----/----/----/----/----/
M /----/---/-----/+3
F /---/---/ +3
R 3 bomboane ramase
1/3=3 bomboane ramase
Fratele =1/3+3=3+3= 6 bomboane
1/2 =6+3+3=12 bomboane
B=12x2= 24 bomboane in total
M=1/2 din 24+ 3 = 24 : 2 + 3 = 12 + 3
M=15 bomboane
24-15=9 bomboane
F=1/3 din 9 +3= 9 : 3 + 3 = 3 + 3
F=6 bomboane fratele
R=3 bomboane ramase
proba
24-(15+6)=24-21=3 bomboane ramase