Question 492619
5(180 - x) - 630 = 90 - x
900 - x - 630 = 90 -x
270 - 5x = 90 - x 
180 = 4x
45 = x
45 = the complement.
135 = the supplement.
6(135) = 675 - 630 = 45 degrees.
This does check, 
Cleomenius.