find the value of X
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Answer:
The Correct Answer is 12
Step-by-step explanation:
Using Exterior Angle Property,
That Mean, Angle A + Angle C = Angle DBC
Therefore,
3x + 20 + 4x = 10x - 16
7x + 20 = 10x - 16
20 + 16 = 10x - 7x
36 = 3x
12 = x
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