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18-01-2017
Mathematics

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18-01-2017

y is equal to 3x.
because alternating angles are equivalent

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18-01-2017

Since AB is parallel to JK 3x and 7x are consecutive interior angles. This means their sum is 180.
3x + 7x = 180
10x = 180
X = 18
7x and y are a linear pair so 7(18)+y =180
128 + y = 180
Subtract 128 from both sides
y = 52

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