a : 10 = b rest 3 10 -3 = 7
a : 12 = c rest 5 12 -5 =7
a : 60 = d rest ?
a = 10 × b + 3 | + 7
a = 12 × c + 5 | +7
a + 7 = 10b + 10
a + 7 = 12c + 12
=> a + 7 = multiplu de 10 si multiplu de 12
aflu CMMMC [10,12] = 60 => a + 7 apartine M60
a+7 =60 ×2
a = 120-7 = 113
113 :60 = 1 rest 53
