Tính: a, 5/9 x 12/7 b, 6/5 : 8/3 c, 9/20 x 5/12 d, 15/16 : 25/24 e, 14 x 5/21 g, 10 : 5/3

Tính:

a, 59x127=...b, 65:83=...c, 920x512=...d, 1516:2524=...e, 521x14=...g, 10:53=...h, 53:10=...