Question

Выберите пожалуйста дроби , равные дроби 4,5: 4,10. 8,10. 20,25. 7,15. 24,30. 16,40.

Answer 1

А. ) 8\10 = (8\2) \ (10\2) = 4\5; 4\6 = (4\2) \ (6\2) = 2\3; 10\25 = (10\5) \ (25\5) = 2\5; 14\49 = (14\7) \ (49\7) = 2\7; 9\15 = (9\3) \ (15\3) = 3\5; 12\15 = (12\3) \ (15\3) = 4\5; 14\18 = (14\2) \ (18\2) = 7\9 

б. ) 8\12 = (8\4) \ 12\4) = 2\3; 12\16 = (12\4) \ 16\4) = 3\4; 12\18 = (12\6) \ (18\6) = 2\3; 24\40 = (24\2) \ (40\2) = 12\20 = (12\2) \ (20\2) = 6\10 = (6\2) \ (10\2) = 3\5; 18\27 = (18\3) \ (27\3) = 6\9 = (6\3) \ (9\3) = 2\3; 20\70 = (20\10) \ (70\10) = 2\7; 8\36 = (8\4) \ (36\4) = 2\9; 30\75 = (30\5) \ (75\5) = 7\13 

в. ) 4\12 = (4\4) \ 12\4) = 1\3; 5\15 = (5\5) \ (15\5) = 1\3; 4\204 = (4\4) \ (204\4) = 1\51; 8\16 = (8\8) \ (16\8) = 1\2; 10\40 = (10\10) \ (40\10) = 1\4; 5\50 = (5\5) \ (50\5) = 1\10