(9x + 20°) + 7x = 180° { supplementary angles} 
or, 9x + 20° + 7x = 180 ° 
or, 16x = 180° - 20° 
or, x = 160°/16 
:. x= 10° 
Now, 
9x + 20° + 2y= 180° { supplementary angles} 
or, 9* 10 + 20 + 2y= 180° 
or, 110° + 2y= 180° 
or, 2y= 180° - 110° 
or, y= 70°/2 
:. y= 35° 
ps: double check everything, I don't have a calculator.