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determinati numarul natural x stiindn ca urmatoarele propozitii sunt adevarate A: 3/4 = x/16 B: x/5 = 7/5 C 36/x = 4/9 D 40/30 = 4/x E 54/x = 9/4 F 120/6 = 240/x G 240/90 = x/9 H x/12 = 13/6 I 121/23 = 242/x J 5/6 = I/60​