X= 180 - 157
= 23
Therefore, X is 23 degrees. A straight line has an angle of 180 degrees, so subtracting the given angle would give you X.
Want it exact? Here it is:499.243083(got it from my calculator), if rounded, then here it is:500
Answer:

Step-by-step explanation:
Let a=THETA (angle)

Answer:
X-61=100
X=100-61
X=39%
Step-by-step explanation: