In the given figure, AB || CD, CD || EF and y : z = 3 : 7, then x = ?

Let n be the common multiple.


Y + Z = 180


3n + 7n = 180


N =18


So, y = 3n = 54o


z = 7n = 126o


x = z (Pair of alternate angles)


So, x = 126o

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