Question

1/2 от 1/4, 2/9 от 3/8, 4/7 от 21/48, 15 от 21/45, 15/21 от 42/45!!!!!!!!!!!!!

Answer 1

1/2:1/4=2
2/9:3/8=16/27
4/7:21/48=60/49или 1целая11/49
15:21/45=1/63
15/21:42/45=75/98