Answer:
According to the given Attachment
we know sum of all angles in a triangle is 180° .
- Sum of all angles in ∆ = 180°
On substituting the given value we obtain
➥ x + 61° + 70° + 61° = 180°
➥ x + 192° = 180°
➥ x = 180° - 192°
➥ x = -12°
So, the value of x is -12°