Question

In xyz,if angle x=3angle y and angle z = 2angle y ,then angle x =

Answer 1

$x + y + z = 180 \\ x = 3y \\ y = \frac{x}{3} \\ z = 2y = \frac{2x}{3} \\ x + \frac{x}{3} + \frac{2x}{3} = 180 \\ 2x = 180 \\ x = 90 \: degrees$