SOLUTION: The supplement of an angle is 30 degree less than twice the angle. Find the angle.

Question 195992: The supplement of an angle is 30 degree less than twice the angle. Find the angle.
Answer by jojo14344(1513) (Show Source): You can put this solution on YOUR website!

We know supplementary angles add to 180 deg.

So, A + B =180, Working Eqn.

*note, B is a supplement of A and as per condition:

B = 2A - 30 deg (twice the angle less 30 deg)

Substitute condition to our Working Eqn.

--->
, Answer

To check supplement angle ( via working Eqn)

Or via condition:

Thank you,
Jojo

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