To find the equation for the two adjacent angles, you can set up the equation based on the fact that their sum is equal to the measure of the 90° angle.
The measures of the two angles are given as:
- The first angle: \( x + 18 \)
- The second angle: \( x \)
Since these two angles are adjacent and together form a right angle (90°), you can write the equation as:
\[ (x + 18) + x = 90° \]
So the final equation for the two adjacent angles is: \[ (x + 18) + x = 90 \]