Answer:
the answer is 70.
Step-by-step explanation:
Since x and 80 are non-adjacent co-interior angles with respect to ( 2x +10 )
So,
x + 80 = 2x + 10 ( sum of two non-adjacent co-interior angles is equal to the exterior angle of that triangle )
=> 80 - 10 = 2x - x *( switching sides of x and 10 )
=> 70 = x
So, the value of x is 70
