Question 100420
Hello!

First,let x be the angle,180-x be the supplement,9-x be the complement.then,we need to do the equation.

Solution:
3(180-x)=8(90-x)
  540-3x=720-8x
     540=720-5x
    -180=-5x
      36=x
       x=36

Final Answer:
the angle is 36,supplement is 144,complement is 54.

Thank You!!!