Answer:
65
Step-by-step explanation:
They are vertical angles; so angles are congruent
*Vertical angles are always congruent*
Congruent means equal or same.
1) Since they are congruent, you form an equation.
145 = 2x + 15
2) Solve by subtracting 15 from both sides.
145 = 2x + 15
- 15 -15
----------------------
130 = 2x
3) Solve by dividing 2 from both sides
130/2 = 2x/2
4) Simplify
x = 65
