The angles 23 and 25 are vertical opposite angles
The equation used to solve for x is 3x + 4 = 2x + 11
How to determine the equation.
From the complete question, we have the following equation
[tex]\angle 23 = \angle 25[/tex]
The above is true, because both angles are vertical opposite angles.
So, we have:
[tex]3x + 4 = 2x + 11[/tex]
Collect like terms
[tex]3x - 2x = 11 - 4[/tex]
Evaluate the like terms
[tex]x = 7[/tex]
Hence, the equation used to solve for x is 3x + 4 = 2x + 11
Read more about vertical opposite angles at:
https://brainly.com/question/1673457
