Collinear points, with segment lengths: find the length

[Teenagelobotomy]

My second day of geometry and Im already lost. Nice, huh? What on earth do I do?

Directions: In the diagram of collinear points, the points are ordered, left to right, as G, H, I, J, and K. We have the following segment lengths: GK = 24, HJ = 10, and GH = HI = IJ. Find the length.

 

[stapel]

Find the length.

"Find the length" of what?

Please reply with clarification. When you reply, please include all of the steps you have tried so far.

Thank you.

Eliz.

 

[Denis]

Hint; can you follow this:
G....x....H....x....I....x....J......24-3x.....K