va rog ajutatima va rog

Răspuns:
a)125/325=5/13
144/264=6/11
432/342=24/19
216/630=12/35
236/476=59/119
132/492=13/29
234/522=13/29
315/225=7/5
b)25•37-427:7+(3^5-3):12/56•27+245:7
925-61+3^5-3/12/1512+35
3536/4/1547
4/7