Answer:
v = 15
Explanation:
By exterior angle theorem:
9v° = 31° + (4v + 44)°
9v° = (4v + 44 + 31)°
9v = 4v + 75
9v - 4v = 75
5v = 75
v = 75/5
v=15
31+4v+44=9v
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