what is the measure of angle x?

Answer:
9 degrees
Step-by-step explanation:
the quick answer is because opposite angles are congruent. in triangle ABC angle c will be 35 degrees because 180 - 103 - 42 = 35. t=from there you know that the angle to the right of 103 will also be 35.
Now you solve for the other missing angle on line DE which will be 68.
Last you know that the angle of a line is 180, so you subtract 103 and 68 from 180 and that leaves you with 9. so x = 9 degrees.