Respuesta :

7 + 7 + (-1)
7 + 7 - 1
13

Hope this helps :)
MarkV
Hi there! The answer is C. 13

Step by step:
7 + 7 + (- 1) =

Work out the parentheses.
7 + 7 - 1 =

Now add up
14 - 1 =

Finally subtract
13