Answer:
8) x = 27
Angle P = x - 12 (15)
Angle Q = 5x - 27 (108)
Angle R = 2x + 3 (57)
Equation: (x - 12) + (5x - 27) + (2x + 3) = 180
x = 27
9) x = 14
Angle A = 7x - 6 (92)
Angle B = 3x - 5 (37)
Angle C = 4x - 5 (51)
Equation: (7x - 6) + (3x - 5) + (4x - 5) = 180
x = 14
10) x = 20
Angle K = x (20)
Angle L = x + 13 (33)
Angle J = 6x + 7 (127)
Equation: x + (x + 13) + (6x + 7) = 180
x = 20
11) x = 41
Angle Y = x (41)
Angle W = 2x - 5 (77)
Angle X = x + 21 (62)
Equation: x + (2x - 5) + (x + 21) = 180
x = 41
