Question

Ana si Bogdan au impreuna 7 mere,iar Ana si Calin au impreuna 8 mere.Determinati cate mere are Ana,stiind ca,impreuna,cei trei copii au 13 mere

Answer 1

13-8= 5 mere are Bogdan
13-7 = 6 mere are Calin
8-6= 2 mere are Ana
sper ca te.am ajutat!

Answer 2

A+B=7 mere
A+C=8 mere
A+B+C=13 mere

7 mere+C=13 mere
C=13 mere-7mere
C=6(mere are Calin)

A+6 mere=8 mere
A=8 mere-6 mere
A=2(mere are Ana)

2 mere+B=7 mere
B=7 mere-2 mere
B=5(mere are Bogdan)