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ce numar impartit la 15 30 si 45 da un cat si rest 13

Răspuns :

a=15*b+13
a=30*c+13
a=45*d+13
a-13=c.m.m.m.c 15,30,45
15=5*3
30=2*3*5
45=3*3*5
a-13=90
[tex]a - 13 = {3}^{2} \times 5 \times 2 = 90[/tex]
a=90+13=103

103:15=6 rest 13

103:30=3 rest 13

103:45=2 rest 13