We know that 2x and 13x have to equal 180° because the two angles together are on a line. Lines = 180°
Solve for x and then find 2x and 13x.
2x+13x=180
15x=180
Divide both sides by 15
x=12
2x= 2(12)= 24°
13x= 13(12)= 156°
Check your work:
24°+156°=180°
180°=180°
Hope this helps!! :)