From the problem statement, we can say that the sum of segment JP and segment PK is equal to the line JK.
JP + PK = JK.
First, we substitute the equations to each term.
(8z - 17) + (5z + 37) = 17z - 4
Combining like terms.
13z + 20 = 17z - 4
Solving for z,
4z = 24
z = 6