Answer:
x = 65°
Step-by-step explanation:
Because l is a straight line, and m and n are parallel, the angle just below (2x-5)° is equal to 45°. Together, these two lie on a straight line, meaning that if you add them, you will get 180°. We can write this as:
(2x-5) + 45 = 180
2x - 5 = 135
2x = 130
∴ x = 65°
