Answer:
a = 90
b = 40
c = 60
d = 30
x = 18
y = 14
Explanation:
90 + d + c = 180
90 + 2y + 2 + 3y + 18 = 180
5y + 110 = 180
5y = 70
y = 14
d)
2y + 2
2(14) + 2
30
c)
3y + 18
3(14) + 18
60
a)
a + 90 = 180
a = 90
b)
a + b + 50 = 180
90 + 2x + 4 + 50 = 180
2x + 144 = 180
2x = 36
x = 18
2x + 4
2(18) + 4
40