Question

(+5) + (-8) - (+13) =

Answer 1

(+5) + (-8) - (+13) 
5 - 8 - 13
5 - 21
-16

Answer 2

( + 5) + ( - 8 ) - ( + 13 ) = eliminando parênteses
+5 - 8 - 13 =
+ 5 - 21 =
- 16