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Prin metoda algebrica. Dau coroana!!

Prin Metoda Algebrica Dau Coroana class=

Răspuns :

x/3 - prima zi =>rest 2x/3
2/5 • 2x/3 = 4x/15 - a doua zi
x/3 + 4x/15 + 12/5 = x
5x+4x+36=15x
6x=36
x=6 km