Answer:
JP = 82
Explanation:
I believe the question should have K is between J and P ( not B ), then
JP = JK + KP ( substitute given values )
4x - 10 = 31 + 2x + 5 , that is
4x - 10 = 2x + 36 ( subtract 2x from both sides )
2x - 10 = 36 ( add 10 to both sides )
2x = 46 ( divide both sides by 2 )
x = 23
Then
JP = 4x - 10 = 4(23) - 10 = 92 - 10 = 82