Respuesta :
1 hora 3600 seg
H 280
H = 280/3600
= 7/90
45 min = 3/4 hr
La diferencia: 3/4 - 7/90
= 180(135 - 14)
= 121/180
Luego:
45 min - 280 seg = 121/180 horas
H 280
H = 280/3600
= 7/90
45 min = 3/4 hr
La diferencia: 3/4 - 7/90
= 180(135 - 14)
= 121/180
Luego:
45 min - 280 seg = 121/180 horas