Finding the Distance Between two points on a line segment

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LovelyRoxie17

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I am just starting Geometry Segments and Distances and trying to find the length between two different points. One of my questions is HJ=4x+9 How would I find X if the other two equations with the problem are JK=3x+3 and KH=33.
I have made up the line and put the points where they belong.
This is the problem. Suppose J is between H and K use the segment addition postulate to find X then find the length of each segment. HJ=4x+9, JK=3x=3, KH=33.

I am having a problem trying to figure out how to solve for X because I have never done this before.
 
Suppose J is between H and K use the segment addition postulate to find X then find the length of each segment. HJ=4x+9, JK=3x=3, KH=33.
I assume it's meant to say JK=3x+3

HJ+JK=HK
4x+9+3x+3=33
7x+12=33
7x=21
x=3
 
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