An angle is 30 degree less than 2 times of its supplement. Find the angle

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Solution

Dear Student
Let the angle be x.
Then, its supplement = (180 - x)
Now,
x = 2( 180 - x ) - 30
=> x = 360 - 2x - 30
=> x + 2x = 360 - 30
=> 3x = 330
=> x = 330/3
=> x = 110
Hence, the angle is 110° .
Regards

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