[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
In the given figure, Angle 3x forms linear pair with Angle 123°, so their sum measures 180°
that is :
- [tex]123 + 3x = 180[/tex]
- [tex]3x = 180 - 123[/tex]
- [tex]x = \dfrac{57}{3} [/tex]
value of x = 19°
