Help please Brainiest to whoever is correct

Answer:
x=112 or x= 202/27 or x=382/27
Step-by-step explanation:
sorry not sure if the angles add up to 90 degrees or 180 or 360.
hope this helps!
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Answer: x= 12
Step-by-step explanation: These are vertical angles. Vertical angles are equal.
(15x-29)= (12x+7) subtract 12x from both sides. 3x-29 = 7. Add 29 to both sides. 3x = 36. Divide both sides by 3. x= 12