g=gutui; p= pruni; c=ciresi
g+p+c=587
p+c=349
g+p=p+c+96 =>g+p=349+96=>g+p=445
? g,p si c s-au plantat in livada
g+349=587
g=587-349
g=238
g+p=445
238+p=445
p=445-238
p=207
g+p+c=587
238+207+c=587
445+c=587
c=587-445
c=142
S-au plantat 238 gutui, 207 pruni si 142 ciresi.