Question

1.Ana si Bogdan au impreuna 7 mere,iar Ana si Calin au impreuna 8 mere. Determinati cate mere are Ana, stiind ca ,impreuna,cei 3 copii au 12 mere.
2. Se considere functia f: R⇒R , f(x)=x-2

Answer 1

A(na) + B(ogdan) = 7
A(na) + C(alin) = 8
A + B + C = 12
C = 12 - 7 = 5
A = 8 - 5 = 3