Fill the blank spaces to complete the text.
Completa los siguientes espacios:
· The letter Z represents the set of numbers.
· The letter N represents the set of numbers.
· + 5 0
· - 5 0
· + 5 - 13
· - 7 - 9
· |-16| =
· |+ 23| =
The opposite of these integers are:
· (+ 5) = ()
· (- 7) = ()
· (- 19) = ()