Since angles ∠KLM and ∠MLP are supplementary, their measures add up to 180°.
Given:
- m∠KLM = (x + 30)°
- m∠MLP = (2x + 60)°
We can set up the equation:
\[ (x + 30) + (2x + 60) = 180 \]
Now, simplify the left side:
\[ x + 30 + 2x + 60 = 180 \]
Combine like terms:
\[ 3x + 90 = 180 \]
This leads us to the simplified equation:
\[ 3x + 90 = 180 \]
Thus, in the format you provided:
\[ x° + 90° = 180° \]
So, the correct answer is \(3x + 90 = 180\).