Question 330884
x+2x-20+ 3x-10= 180
6x-30=180
add 30
6x-30+30=180+30
6x=210
x= 210/6
x= 35

second angle = 2x-20
=2*35-20
=70-20
=50
..
Third angle = 3x-10
3*35-10
105-10
=95

No angles are same. so scalene triangle