Помогите сделать 920номер
1) 7/20 и 5/12 = 7/60 и 25/60 2) 11/24 и 1/30 = 55/120 и 4/120 3) 3/16 и 7/12 = 9/48 и 28/48 4) 11/18 и 7/12 = 22/36 и 21/36 5) 1/12 и 2/9 = 3/36 и 8/36 6) 4/21 и 13/28 = 16/84 и 39/84