Question 682938
x = original angle
y = supplement
...
Supplementary angles have a sum of 180
...
x + y = 180
x = 5y
...
5y + y = 180
6y = 180
y = 30
...
x = 5(30) = 150
...
The original angle is 150 degrees
.....................
Have more questions? 
Email: HomeworkHelpers@readingboosters.com
Delighted to help.
-Reading Boosters
Website: www.MyHomeworkAnswers.com 
Wanting for others what we want for ourselves.