Question

find the value of x from the given figure

Answer 1

these all angles together make 180degree .
then x-1+x+x+1=180
3x=180
x=180/3=60
then the left angle is 59,the middle angle is 60 and the last angle is 61.Hope it helps you.

Answer 2

as we know that angle on straight line sum 180°
(x-1)+x+(x+1)=180
x-1+x+x+1=180
3x=180
x=180/3
x=60.
now putting the value of x
1st angle = 60-1 => 59.
2nd angle = 60
3rd angle= 60+1 =>61