Solve {l}{p_{1}=1/2+1/6p_{4}}{p_{4}=5/6+1/6p}

$$\left. \begin{array} { l } { p _ { 1 } = \frac { 1 } { 2 } + \frac { 1 } { 6 } p _ { 4 } } \\ { p _ { 4 } = \frac { 5 } { 6 } + \frac { 1 } { 6 } p } \end{array} \right.$$

Solve for p_1, p_4, p (complex solution)

$$p_{1}=\frac{p+23}{36}$$

$$p_{4}=\frac{p+5}{6}$$

$$p\in \mathrm{C}$$

Solve for p_1, p_4, p

$$p_{1}=\frac{p+23}{36}$$

$$p_{4}=\frac{p+5}{6}$$

$$p\in \mathrm{R}$$