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Abcabc•11=? .....................

Răspuns :

(100000a+10000b+1000c+100a+10b+c)11=

(100100a+10010b+1001c)11=

1001(100a+10b+c)11=

11011(100a+10b+c)

abcabc ( Barat ) * 10 = abcabc0 ( Barat )
abcabc ( Barat ) * 11 = abcabc0 + abcabc
abcabc * 11 = abcabc0 + abcabc