Suma a 3 numere este 73.
a + b + c = 73
a = 2×c
b = a : 4 + 3
a |_____|_____|_____|_____|
b |_____|+3
c |_____|_____|
73 - 3 = 70 (suma celor 7 segmente egale)
70 : 7 = 10 (un segment egal)
a = 4 × 10 = 40
b = 10 + 3 = 13
c = 2 × 10 = 20
Verificare:
40 + 13 + 20 = 73
