Okay. Since the "y" value and 82 are on the same straight line, their values will always add up to make a sum of 180. So if you subtract 82 from 180 you get 98. So your "y" value is equal to 98.
Now, all of the degree values added together should give you a sum of 360, so now we must add the values we know, in order to find the "x" value. So, 112+82+98=292. Now we know that the difference of 360 and 292 will give us the x value. So finally, 360-292=68. So your "x" value is equal to 68.
y=98
x=68
