Respuesta :
a = -7
Explanation:
You did the -9 to both sides correctly. This is because we want to get rid of the 9, since we want to isolate a. 2 - 9 = -7, therefore a = -7.
Explanation:
You did the -9 to both sides correctly. This is because we want to get rid of the 9, since we want to isolate a. 2 - 9 = -7, therefore a = -7.