Question

In a triangle ABC,2angleA=2angleB=6angleC

Answer 1

let angle b be x then angle a is x and angle c is 3x
3x+x+x=180
=5x=180
x=36
angle a=b=36
angle c= 108

Answer 2

$a + b + c = 180°$
a+b+c=180°
2+6+c=180°
8+c=180°
c=180°-8
c=172°