In a parallelogram, the diagonals bisect each other. This means that \( ML = LO \).
Given that:
- \( ML = x + 7 \)
- \( LO = 2x - 10 \)
Since \( ML = LO \), we can set up the equation:
\[ x + 7 = 2x - 10 \]
Now, let's solve for \( x \). First, we can subtract \( x \) from both sides:
\[ 7 = x - 10 \]
Next, we add 10 to both sides:
\[ 7 + 10 = x \]
\[ 17 = x \]
Thus, the value of \( x \) is:
\[ \boxed{17} \]