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Step-by-step explanation:
Given x : 25°
=>3x
o
=75
o
We know that, ∠AOC,∠BOC are linear pair of angles.
=> ∠AOC+∠BOC=180
0
(2y+5) ° +3x° =180
2y+5+75=180
2y+5+75=180
2y+80=180
2y=180−80
y=100/2
∴y=50
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