Alin a colectionat In doua zile cateva timbre. In prima zi a colectionat 19 timbre. In a treia zi Alin a colectionat de 3 ori mai mult.
Cate timbre a colectionat In total?
Rezolvare
1) Cate timbre a colectionat a doua zi?
3×19=57
2) Cate timbre a colectionat In total?
19+57=76
EXERCITIUL PROBLEMEI : 19+(3×19)=19+57=76
