Răspuns:
Explicație pas cu pas:
2.
50/30; 50/31; 50/32; 50/33; 50/34; 50/35; 50/36; 50/37; 50/38; 50/39
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1.
5,2(4) = (524 - 52)/90 = 472/90 = 236/45
371/191
371/191 *236/45 - (236/45 + 371/191) = 371*236/191*45 - 236*191/191*45 - 371*45/191*45 = (371*236 - 236*191 - 371*45)/191*45 = 25785/8595 = 3