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dau coroana jur

Răspuns:
Explicație pas cu pas:
1-5/9=9/9-5/9=(9-5)/9=4/9
1-17/24=24/24-17/24=(24-17)/24=7/24
1-7/13=13/13-7/13=(13-7)/13=6/13
1-50/100=100/100-50/100=(100-50)/100=50/100=1/2
1-25/40=40/40-25/40=(40-25)/40=15/50=3/10