Question

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

Answer 1

а. ) 810 = (82) (102) = 45; 46 = (42) (62) = 23; 1025 = (105) (255) = 25; 1449 = (147) (497) = 27; 915 = (93) (153) = 35; 1215 = (123) (153) = 45; 1418 = (142) (182) = 79 

б. ) 812 = (84) 124) = 23; 1216 = (124) 164) = 34; 1218 = (126) (186) = 23; 2440 = (242) (402) = 1220 = (122) (202) = 610 = (62) (102) = 35; 1827 = (183) (273) = 69 = (63) (93) = 23; 2070 = (2010) (7010) = 27; 836 = (84) (364) = 29; 3075 = (305) (755) = 713 

в. ) 412 = (44) 124) = 13; 515 = (55) (155) = 13; 4204 = (44) (2044) = 151; 816 = (88) (168) = 12; 1040 = (1010) (4010) = 14; 550 = (55) (505) = 110