Answer:
x = 15
y = 9
Explanation:
( 4y + 9 ) and 15y are co - interior angles.
Sum of co - interior angles is 180,
4y + 9 + 15y = 180
4y + 15y = 180 - 9
19y = 171
y = 171 / 19
y = 9
( 6x - 15 ) and ( 4x + 15 ) are alternate exterior angles.
Alternate exterior angles are equal,
6x - 15 = 4x + 15
6x - 4x = 15 + 15
2x = 30
x = 30 / 2
x = 15