grupa mica | ____|
grupa mijlocie |____|__|+15
grupa mare |____|__|___|+15+20
110-(15+15+20)=60 (3 sg egale)
60÷3=20 (grupa mica)
20+15=35 (grupa mijlocie)
35+20=55 (grupa mare)
a |____|
b |____|
c |____|__|+18
75-18=57 (3 sg egale)!
57÷3=19 (a,b)
19+18=37(c)
m |____|+12
p |____|
t |____|+18
120-(12+18)=90 (3 sg egale)
90÷3=30 (puiul)
30+12=42(mama)
30+18=48 (tata)
