Question

(6/8-15/16):(21/15+1/3)=

Answer 1

(6/8-15/16):(21/15+1/3)= Resolvendo por partes

6/8 - 15/16 = ---mmc(8,16)=16
12/16 - 15/16 = - 3/16

21/15 + 1/3 = ---mmc(3,15 ) = 15
21/15 + 5/15 = 26/15

Arrumando:
- 3/16 : 26/15 =
   - 3    .   15    =
    16       26
 - 45   = -   45  
  416         416