Question 985199
let x be the angle
if sum of two angles is 90 , then those are termed as complimentary angles
let y be the complementary angle 
 x+y =90
   y=90-x
  if sum of two angles is 180 , then those are termed as sumplementary angles
let z be the supplementary  angle 
 x+z =90
    z=180-x
 A supplement of an angle is 3 times a complement of the angle
   z=3*y

   (180-x)=3(90-x)
    180-x=270-3x
move -3x to the left

180-x+3x=270
180+2x=270
   2x=270-180
   2x=90
   x=90/2
  x=45
  angle (x)= 45 degrees
  supplement angle = 180-45
                      =135 degrees
 compliment angle  =90-45 
 =45 degrees