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Un turist a parcurs 4/10 (supra) dintr-un traseu. El mai are de mers inca 12 km . Afla lungimea totala a traseului.Reprezinta grafic!

Răspuns :

/../../../../../../../../../../=10/10
/../../../../../../=6/10=12km
10/10-4/10=12km
6/10=12km
1/10=12:6=2km
10/10=10x2=20 km are traseul