x= 30 y= 35 and z= 115
x is the same as 30 because the top and bottom lines are parallel and a line is cutting it which makes it a z so x is 30
the same with y, y is 35
now we have to find z so we forget about the upper triangle and focus on the lower triangle which means:
30+35= 65
triangle = 180 degrees
180-65=115 degrees