Question

An angle is $45°$ less than two times of its supplement. Find the angle.

Answer 1

Let the angle be $x$

So, its supplement is $180°-x$

As given

$$\begin{gathered} x=2\left(180-x\right)-45° \\ x=360-2x-45 \\ 3x°=315° \\ x=105° \end{gathered}$$

So, the required angle is $105°$