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Answer:
x = 126°
Explanation:
We have, y : z = 3 : 7
Let y = 3k and z = 7k
Clearly x and z are alternate angles.
∴ x = z
⇒ x = 7k
Since x and y form a pair of interior angles on the same side of the transversal.
∴ x + y = 180°
⇒ 7k + 3k = 180°
⇒ 10k = 180°
⇒ k = 18°
Hence,
x = 7k
= 126°
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