Fie a numarul
a : 4 = a : 2 - 82 =>
=> a : 2 - a : 4 = 82
a : 2 |____|____|
a : 4 |____|
Avem 2 segmente egale - 1 segment egal = 1 segment egal = 82
a : 2 = 2×82 = 164
a : 4 = 82
a = 82 × 4 = 328
Verificare:
164 - 82 = 82
328 : 4 = 328:2- 82
82 = 164-82
82 = 82
328 este numarul cautat
