Answer:
x = 19
Explanation:
Alternate Exterior Angles Theorem
When a transversal line intersects two parallel lines, the resulting alternate exterior angles are congruent.
Therefore:
⇒ 8x + 11 = 5x + 68
⇒ 8x + 11 - 5x = 5x + 68 - 5x
⇒ 3x + 11 = 68
⇒ 3x + 11 - 11 = 68 - 11
⇒ 3x = 57
⇒ 3x ÷ 3 = 57 ÷ 3
⇒ x = 19