Question

me ayudan por favor​

Answer 1

Respuesta:

15. 3/4 + 1/6 - 11/12 = (9 - 2 - 11)/12 = -4/12 = -1/3

16. 7/12 + 3/8 - 1/20 = (70 + 45 - 6)/120 = 109/120

17. 3/4 + 2/5 - 3/20 = (15 + 8 - 3)/20 = 20/20 = 1

18. 3 + 1/2 - 3/4 = (12 + 2 - 3)/4 = 11/4

19. 1/4 - 1/16 - 1/2 = (4 - 1 - 8)/16 = -5/8

20. 4/5 - 1/6 - 1/3 = (24 - 5 - 10)/30 = 9/30 = 3/10

21. 5/8 + 3/4 - 1/6 - 2/3 = (15 + 18 - 4 - 16)/24 = 13/24

Espero haberte ayudado.