Answer: x = 60
Step-by-step explanation: Notice that these two angles are vertical angles.
Whenever two lines intersect, a pair of vertical angle is always formed.
Now, vertical angles are always congruent.
So we can setup the equation 2x + 24 = 144.
Solving from here, we first subtract 24 from both sides to get 2x = 120.
Now dividing both sides by 2, we find that x = 60.
So x = 60.