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Efectuați scăderile:
17/12-3/16
25/18-5/12
URGENTT


Răspuns :

7/12-3/16=68/48-9/48=59/48

25/18-5/12=50/36-45/36=5/36

c.m.mm.c la pr ex;48

c.m.m.m.cla al doilea ex ;36