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Radu,Vlad si Andra au 342 de figurine. Afla cate figurine are fiecare,stiind ca Radu si Vlad au impreuna 236 iar Vlad si Andra au impreuna 216 figurine.

Răspuns :

r-Radu
v-Vlad
a-Andra
r+v+a=342
r+v=236
v+a=216
342-236=106(figurine are Andra)
216-106=110(figurine are Vlad)
342-(110+106)=
342-216=126(figurine are Radu)