15-09-2017
Mathematics

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15-09-2017

Since r//s , then ∠ 1 = ∠ 2 (corresponding angles)

m ∠ 1 = m ∠ 2

60 - 2x = 70 - 4x
-2x + 4x = 70 - 60
2x = 10

and x= 5

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