a = primul nr
b = al 2-lea nr
a - b = 15
a : b = 2 rest 7
a = 2×b + 7
a |______|______|+7
b |______|
2 segmente - 1 segment = 1 segment +7 = 15
15 - 7 = 8 ( un segment)
a = 2 × 8 + 7 = 16 +7 = 23
b = 8
Verificare:
23 - 8 = 15
23 : 8 = 2 rest 7
a = 23
b = 8
