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3n+1+5n=9 rezolvati ecuatia

Răspuns :

3n+1+5n=9
8n+1=9
8n=9-1
8n=8
n=8:8
n=1
3n+1+5n=9
8n+1=9
8n=9-1
8n=8
n=8:8
n=1