Răspuns :
Ma ( x + y + z ) / 3 = 45
⇒ x + y + z = 3 × 45 = 135 → suma celor 3 numere
M a ( x; y; z si 49 ) = ( x + y + z + 49 ) / 4 = ( 135 + 49 ) / 4 = 184 / 4 = 46 → media aritmetica a numerelor x; y; z si 49
Ma ( x + y + z ) / 3 = 45
⇒ x + y + z = 3 × 45 = 135 → suma celor 3 numere
M a ( x; y; z si 49 ) = ( x + y + z + 49 ) / 4 = ( 135 + 49 ) / 4 = 184 / 4 = 46 → media aritmetica a numerelor x; y; z si 49