Răspuns :
t - tei
s - stejari
f - fagi
t |____|____|____|
s|____|
f |____|____|____|9|
58-9=49
49:7=7 stejari
7x3=21 tei
7x3+9=30 fagi
s - stejari
f - fagi
t |____|____|____|
s|____|
f |____|____|____|9|
58-9=49
49:7=7 stejari
7x3=21 tei
7x3+9=30 fagi