Answer:
x=55°, y=35°, z=145°
Explanation:
y is vertically opposite to 35, meaning they share the same value.
We can see that x and y add to 90, as together they take up the space as the angle with the box (a symbol for 90°). This means x+y=90, and x=90-y, which can be written as x=90-35 when subbing y with its known value. This solves to x=55.
z and 35 together form a straight line, meaning z+35=180, or z=180-35. This can be solved to z=145.
**This content involves working out values of angles, which you may wish to revise. I'm always happy to help!