Respuesta :

Answer:

43

Step-by-step explanation:

( 8 - 9 ) - ( 32 - 40 ) + ( 16 + 20 )=

-1 - ( -8 ) + 36

-1 + 8 + 36

7 + 36

43

2 negatives become a positive.

Hope this helped!

Have a supercalifragilisticexpialidocious day!