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Exercițiul 30 va rog de la 1 pana la 6

Exercițiul 30 Va Rog De La 1 Pana La 6 class=

Răspuns :

CosmoteRo
1/2+3/4-1/5=10/20+15/20-4/20=21/20
4/5-3/4+1/2=16/20-15/20+10/20=11/20
1/3+3/2-1/6=2/6+9/6-1/6=10/6=5/3
5/2+3/4-1/12=30/12+9/12-1/12=20/12=5/3
1/2-2/5+1/3=15/30-12/30+10/30=13/30
1-1/2+1/3-1/4+1/5=60/60-30/60+20/60-15/60+12/60=47/60

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