Приведите к НОЗ 7/20и 5/12. 11/24и1/30. 3/16и7/12. 11/18и7/12. 1/12и2/9. 4/21и13/28

7/20 и 5/12 = 21/60 и 25/6011/24 и 1/30 = 55/120 и 4/1203/16 и 7/12 = 9/48 и 28/4811/18 и 7/12=66/108 и 63/1081/12 и 2/9 = 3/36 и 8/364/21 и 13/28 = 16/84 и 39/84