Răspuns :
a + b = 52
a : b = 3 rest 4
a = 3b + 4
3b + 4 + b = 52
4b = 52 - 4
4b = 48
b = 48 : 4
b = 12
a = 3 x 12 + 4 = 40
Proba: 40 + 12 = 52
40 : 12 = 3 rest 4
a : b = 3 rest 4
a = 3b + 4
3b + 4 + b = 52
4b = 52 - 4
4b = 48
b = 48 : 4
b = 12
a = 3 x 12 + 4 = 40
Proba: 40 + 12 = 52
40 : 12 = 3 rest 4