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Cel mai mare numar natural care verifica inegalitatea 5x-12<9 esti....

Răspuns :

[tex]5x-12\ \textless \ 9 \\ \\ 5x\ \textless \ 9+12 \\ \\ 5x\ \textless \ 21=\ \textgreater \ x\ \textless \ 21:5=\ \textgreater \ x\ \textless \ 4,2 \\ \\ x=4[/tex]