Answer:
x = 5
Step-by-step explanation:
In ΔPQR, PR is extended through point R to point S.
m∠PQR=(2x+1) ∘
m∠QRS=(10x−10) ∘
m∠RPQ=(3x+14) ∘
Hence, we solve using Exterior angle Theorem.
This means that:
m∠QRS = m∠PQR + m∠RPQ
(10x - 10)° = (2x + 1)° + (3x + 14)°
10x - 10 = 2x + 1 + 3x + 14
Collect like terms
10x - 2x - 3x = 1 + 14 + 10
5x = 25
x = 25/5
x = 5