Respuesta :
Answer:
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
Step-by-step explanation:
Answer:
-9=n
Step-by-step explanation:
-13=4-n
+4 to both sides to get n by its self
-13+4=9
-13-4=9
-9=n