santiagorubio2 santiagorubio2

22-03-2018
Mathematics

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Find the value of x and the value of y.

Find the value of x and the value of y class=

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choixongdong choixongdong

22-03-2018

5x - 100 + x - 20 = 180 (sum of supplementary angles is equal 180)
6x - 120 = 180
6x = 300
x = 50

x - 20 = 50 - 20 = 30

so
3y = 30 (vertical angles are equal)
y = 10

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