Statistics and Probability: JEE Main 2024 Mathematics question

Let the mean and the standard deviation of the probability distribution $\mathrm{X}$ | $\alpha$ | 1 | 0 | $-$3 $\mathrm{P(X)}$ | $\frac{1}{3}$ | $\mathrm{K}$ | $\frac{1}{6}$ | $\frac{1}{4}$ be $\mu$ and $\sigma$, respectively. If $\sigma-\mu=2$, then $\sigma+\mu$ is equal to ________.