Question

Diana,Camelia si Corina au colectionat inpreuna 154 de ilustrate .Diana si Camelia au impreuna 89 ilustrate,iar Camelia si Corina au impreuna 118 de ilustrate .
Cate ilustrate a colectionat fiecare fetita?

Answer 1

notam cu a,b,c numele fetelor
a+b+c=154
a+b=89
b+c=118
89+c=154
c=65
a+118=154
a=36
a+b=89
36+b=89
b=53