Answer:
We know that a modulus gives us the absolute value of a number
Hence, this modulus will give a positive value, regardless of the actual value in the modulus
| -1 + n | = 3
(-1 + n) or (1 - n) = 3 -------------------This tells us that either one of the values will give us the same answer
-1 + n = 3 or 1 - n = 3
n = 4 or n = -2
