<u>We are provided that</u> –
<u>Applying identity</u> –



Answer:
x=70
Step-by-step explanation:
angle FED and GEC are vertical angles so they both equal 50
angle DEB and CEA are also vertical angles so they both equal 20
50+20=70
Answer: y=1/3x+1
Y needs to be changed in order to maintain parallelism.
Good Luck!