Answer:
x = 14
y = 37
Step-by-step explanation:
3x + 9x +12 = 180 {linear pairr}
12x + 12 =180
12x = 180 - 12
12x = 168
x = 168/12
x = 14
3x = 3*14 = 42
4y - 10 + 3x = 180 {linear pair}
4y - 10 + 42 = 180
4y + 32 =180
4y = 180 - 32
4y = 148
y = 148/4
y = 37
