Răspuns :
Este simplu:
35+19=54 (rasaduri de castraveti)
35+54=89(rasaduri legume)
35+19=54 (rasaduri de castraveti)
35+54=89(rasaduri legume)
a=35 rasaduri de rosii
b=a+19 rasaduri de castraveti
b=35+19
b=54 rasaduri de castraveti
a+b=?
54+35=89 rasaduri plantate
b=a+19 rasaduri de castraveti
b=35+19
b=54 rasaduri de castraveti
a+b=?
54+35=89 rasaduri plantate