Plzzz help!!! Please explain how you go the answer.! Thank you!!

Answer:
The value of x is 25.
Step-by-step explanation:
Given that M is the midpoint of LN. So the distance of LM is equals to MN.
[tex]lm = mn[/tex]
[tex]43 = 2x - 7[/tex]
Then you can solve it :
[tex]2x = 43 + 7[/tex]
[tex]2x = 50[/tex]
[tex]x = 25[/tex]