Find the value of X PLEASEEE

Answer:
51 degrees
Step-by-step explanation:
x + 63 + 66 = 180
x + 129 = 180
x = 51
you get 63 by subtracting 117 from 180; those 2 angles form a linear pair
Answer:
51
Step-by-step explanation:
All angles add up to 180. The straight line on the bottom is 180 degrees so 180-117 to find that angle. which equals 63. Then add 63 plus 66 (the other angle) which equals 129. Since they all have to equal 180, subtract 180-129 which equals 51 :)