Answer:
[tex]\angle 6 = 93[/tex]
Step-by-step explanation:
[tex]\angle 5 = 87[/tex] by properties of parallel lines
[tex]\angle 5 + \angle 6 = 180[/tex] because they form a straight angle
[tex]87 + \angle 6 = 180\\\\\angle 6 = 180-87\\\\\angle 6 = 180 - 80 - 7\\\\\angle 6 = 100 - 7\\\\\angle 6 = 93 \longleftarrow[/tex]
