Respuesta :

suspho
30 - 2q = 7
q = (30 - 7) : 2 =
11.5
------------------------
30 - 2 * 11.5 = 7
Hi,

30 - 2q = 16

-2q = 16 - 30

-2q = -14

2q = 14

2/2q = 14/2

q = 7