Răspuns :
Cate ilustrate a colectionat Corina? 154-89=65 Cate ilustrate a colectionat Camelia ? 118-65=53 Cate ilustrate a colectionat Diana? 89-53=36
D+c+corina=154
D+c=89->corina=154-89 corina=65
C+corina=118
C+65=118
C=118-65
C=53
D+53+65=154
D+118=154
D=154-118
D=36