please help? what does x equal?

Answer:
Step-by-step explanation:
Sum of all angles in a trapezium equals 360° and we two 90° angles so now,
[tex]90+90+x+(x-60)=360\\180+2x-60=360\\2x=360-180+60\\2x=180+60\\2x=240\\x=240/2\\x=120[/tex]
so now the angles are 90°,90°,120° and 60° i also attached an image so you can understand better.