Respuesta:
9
Explicación paso a paso:
| 8 | - | -4 | + | -5 |
=8-4+5
=9
17
| - 4 | = 4
| - 5 | = 5
| 8 | = 8
A = | 8 | - | - 4 | + | - 5 |
= 8 + 4 + 5
A = 17
