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17:9= 16:6= 12 :63= 18:40= 22 :21=

Răspuns :

17:9=1,(8)
16:6=2, (6)
12:63=0, (190476)
18:40=0,45
22:21=1, (0476)
17:9=1(8)
16:6=11 rest 4
12:63=0,(190476)
18:40=0,45
22:21=11(0476)