Intro cutie sunt 149 de bile albe,rosii si verzi.Stiind ca numarul bilelor albe si rosii sunt 101,numarul bilelor rosii si verzi sunt 123,afla cate bile sunt de fiecare culoare.
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a+r=101
aflam cele verzi :101+v=149;v=149-101; v=48
r+v=123
aflam cele albe :a+123=149;a=149-123; a=26
aflam cele rosii :v+a adica 74+r=149;r=149-74; r=75
deci 48+26+75=149