Question 272109
x = 1st angle
y = 2nd angle
x = 9y  :: given
x + y = 180 :: given
.
substituting for x = 9y
9y + y = 180
10y = 180
y = 18
x = 9y = 9(18) = 162
.
checking...
x + y = 162 + 18 = 180
.
Answer:
x = 162
y = 18
.