i got the right answer which is 13 but the correct answer but it’s supposed to be a negative. Why is it a negative and how can i do this problem differently?

Answer:
n = -13
Step-by-step explanation:
You were doing everything correct but one minor error
-13 - n = 0
you added 13 to both sides which is correct
-13 - n = 0
+13 +13
than you got, n = 13
but you forgot to bring diwn the negative sign with the n
-13 - n = 0
+13 +13
- n = 13 which is basically
-1n = 13
divided both sides by -1 to get n positive
-1n/-1 = 13/-1
Simplified, n = -13
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