a:30=C1 rest 24⇒a=30C1+24⇒a-24=30C1
a:36=C2 rest 30⇒a=36C2+30⇒a-30=36C2
a:72=C3 rest 66⇒a=72C3+66⇒a-66=72C3
C1,C2,C3=caturi
Aflam cel mai mic multiplu comun al nr.30,36,si 72
30=2x3x5
36=2²x3²
72=2³x3²
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[30,36,72]=2³x3²x5=8x9x5=72x5=360
a-24=360⇒a=360+24=384
a-30=360⇒a=360+30=390
a-66=360⇒a=360+66=426
384:30=12 rest 24
390:36=10 rest 30
426:72=5 rest 66