Respuesta :

18/25 - 3/5

=18/25 - 15/25

=3/25

 

1/3 + 2/15

=5/15 + 2/15

= 7/15


9/10 + 31/80

=72/80 + 31/80

=103/80

=1 23/80


TWEETYNG IS RIGHT . THE ANSWERS R CORRECT