Răspuns :
a + b = 1 209
b : a = 15 rest 9
b = 15 × a + 9
a + b = 1 209
a + ( 15 × a + 9 ) = 1 209
16 × a = 1 209 - 9
16 × a = 1 200
a = 1 200 : 16
a = 75 → primul numar
b = 1 209 - 75 = 1 134 → al doilea numar
Verific: 75 + 1 134 = 1 209
1 134 : 75 = 15 rest 9
b : a = 15 rest 9
b = 15 × a + 9
a + b = 1 209
a + ( 15 × a + 9 ) = 1 209
16 × a = 1 209 - 9
16 × a = 1 200
a = 1 200 : 16
a = 75 → primul numar
b = 1 209 - 75 = 1 134 → al doilea numar
Verific: 75 + 1 134 = 1 209
1 134 : 75 = 15 rest 9