a : b = 5 rest 12
a = 5×b + 12
a - b = 64 < 67
a |___|___|___|___|___|+12
b |___|
5 segmente egale +12 - 1 segment egal = 4 segmente egale + 12 = 64
64 -12 = 52
52 : 4 = 13 (un segment)
a = 5×13+12 = 65+12 = 77
b = 13
Verificare:
77 - 13 = 64
77 : 13 = 5 rest 12
a = 77
b = 13