Question

Explain your answer with steps so that I understand what you did. Thank you very much in advance.

Answer 1

The opposite angles are equal. Those are a pair of angles in the opposite direction, as shown in the picture. In this case,
`125{}^(\circ)` and
`(x+65){}^(\circ)`.

`x+65=125`

`x=60`

There you go!