Answer:
Step-by-step explanation:
solve for y:
y + 20 + 4y - 15 = 180
5y + 5 = 180
y = 175 / 5
y = 35
solve for x:
3x + 5 + x + 15 = 180
4x + 20 = 180
x = 180 - 20
4
x = 40