Determine the set of all real numbers xxx such that the inequality ∣x+3∣−∣x−1∣=4|x+3| - |x-1| = 4∣x+3∣−∣x−1∣=4 holds.
x≥1x \ge 1x≥1
x≤−3x \le -3x≤−3
x∈[−3,1]x \in [-3, 1]x∈[−3,1]
No real solutions