How do i find x? i do not understand.

If I’m reading this right, I think you find the x by solving the triangle with “50” in it. You see where the “80” at, you add 50 and 80 to get 130. Then you subtract 130 from 180 to get 50. The biggest triangle that has “65” the right angle would be 90 degrees. You add 65 and 90 to get 155. The little angle that’s below “80” would be 25 I believe. How I feel that you’ll find x will be to subtract 25 from 180 to get 155. Then I divided 155 by 2 to get 77.5. I’m not sure if 77.5 is the answer, but that’s how I feel like that’s the way you work it. I’m sorry if this not the answer. I really tried.