Question

An angle is 2/3 times its supplementary
angle the measure of the angle is

Answer 1

Please refer the attachment

Answer 2

let one angle be x so other angle=2x/3

they r supplementry so ,sum =180°

$x + \frac{2x}{3} = 180$

$\frac{3x + 2x}{3} = 180$

$5x = 180 \times 3$

$x = 108$

$and \: hence \: \: \: \frac{2x}{3} = \frac{2}{3} \times 108$

and hence

first angle is 108°

other angle is 72°