To find the value of \( x \), we need to know the relationship among the three angles provided (x, 40°, and 273°). If we assume these angles are related to a circle or triangle, here's one way to interpret the question, considering the angles may sum up to 360°:
\[ x + 40° + 273° = 360° \]
Now, we can add the angles on the left side:
\[ x + 313° = 360° \]
Next, we isolate \( x \):
\[ x = 360° - 313° \] \[ x = 47° \]
Thus, the value of \( x \) is:
\[ x = 47°. \]