Respuesta :

alwaysrememberp
Are you solving for k?
If so, it'd be worked out like this:

7 (9 + k) = 84
63 + 7k = 84
7k = 21
k = 21/7
k = 3
mara141
Basically your trying to solve k
7 (9+k)=84
9+k=12
K=3