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Am nevoie urgent de rezolvare va rog frumos!!!
Deci:
99×a+abc=cba


Răspuns :

99a + 100a+10b+c=100c+10b+a
199a+c=100c+a
198a=99c|:99
2a=c
[tex]a \in \{1,2,3,4\} \\ c \in \{2,4,6,8\} \\ b \in \{0,1,...,9 \}[/tex]