Answer:
x = 75
y = 60
Step-by-step explanation:
in line m you have that: x + y + 45 = 180 because it is a straight angle.
Also the blank angle adjacent to 45 is measures y because it is a vertical angle, and using the parallel lines the adjacent angle to 2x - 30 that is in the straight angle of line "l" is also y, then you have:
2x - 30 = 180
2x = 150
x = 75
Replacing x in the first equation:
75 + y + 45 = 180
y + 120 = 180
y = 60
