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Ajutor................. ​

Ajutor class=

Răspuns :

Răspuns:

100a+10b+c=10a+b+10b+c+10c+a

100a+10b+c =11a+11b+11c

100a-11a+10b-11b+c-11c=0

89a-b-10c=0

89a-10c-b=100a+10b+c