Respuesta :

1. 5/8 + 1/8 = 6/8 --> 3/4

3. - 1/4+ 3/4:

  -0.25+0.75= 0.5 OR 1/2

5. 5/9 + 5/9 = 10/9 --> 1 whole 1/9

7. 3/10 + 1/10 = 4/10 --> 2/5

9. 7/15 + 4/15 = 11/15

And I simplified them too :P

Also this is ez, to me :PP