Answer:
x = 26°
Step-by-step explanation:
Since ∡QOS is a right angle then;
∡QOR + ∡ROS = 90°
(x + 5) + (2x + 7) = 90°
3x + 12 = 90°
3x = 90 - 12 = 78°
3x = 78°
x = 78 ÷ 3 = 26°
