Answer:
x = 15
Step-by-step explanation:
(4x + 11)° is suplementary angle to angle corresponding to (6x + 19)° angle
Therefore:
m║n ⇒ (4x + 11)° = 180° - (6x + 19)°
(4x)° + 11° = 180° - (6x)° + 19° {add (6x)° to both sides}
(10x)° + 11° = 161° {subtract 11° from both sides}
(10x)° = 150° {divide both sides by 10°}
x = 15
