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Va rog cat mai repede problema 17

Va Rog Cat Mai Repede Problema 17 class=

Răspuns :

a)2abcd+abcd7=33581
20000+abcd+10*abcd+7=33581
11*abcd+20007=33581
11*abcd=13574=>abcd=1234
c)31abcd+abcd54=534476
310000+abcd+100*abcd+54=534476
101*abcd+310054=534476
101*abcd=224422=>abcd=2222