Answer:
x=8. Length: 35
Explanation:
So you have two line segments that add up to a total segment. RT is the segment. RA and AT add up to RT. So you would set the two portions equal to the segment as a whole to find your answer. Should look something like this:
11+3x = 43-x.
Now to find your x you want to get your x's to one side
11+4x=43
Get all your real numbers to one side
4x=32
Divide by 4 to get x alone
x=8.
Now plug the variable back in to find the segment length:
43-8
Your answer should be 35