n : 24 = c1, rest 5
n : 40 = c2, rest 5
n : 56 = c3, rest 5
n = 24 × c1 + 5
n = 40 × c2 + 5
n = 56 × c3 + 5
faci cel mai mic multiplu comun al nr 24, 40, 56:
24 = 2^3 × 3
40 = 2^3 × 5
56 = 2^3 × 7
[24, 40, 56] = 3 × 5 × 7 × 8 = 840
cel mai mic nr n = 840 + 5 => n = 845