destineystewartdedg
destineystewartdedg
23-02-2018
Mathematics
contestada
Please help??? Geometry
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Аноним
Аноним
23-02-2018
2x + (y + x) = 180 [Supplementary angles]
2x + y + x = 180
3x + y = 180 ---------- (1)
(y + x) + (y - x) = 180 [Supplementary angles]
y + x + y - x = 180
2y = 180
y = 90 --------------- sub into (1)
3x + 90 = 180
3x = 90
x = 30
Ans: x = 30, y = 90
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