Respuesta :
1/9 = 6/54
1/6 = 9/54
6/54 + 9/54 = 15/54
54/54 - 15/54 = 39/54
39/54 = 13/18
13/18 of practice time was spent playing music.
1/6 = 9/54
6/54 + 9/54 = 15/54
54/54 - 15/54 = 39/54
39/54 = 13/18
13/18 of practice time was spent playing music.