Answer:
Step-by-step explanation:
29. x + 60 + 2x + 80 + 40 = 180
3x + 180 = 180
3x = 0
x = 0
m<A= 0 + 60 = 60
30. 2(4x + 5) + 90 = 180
8x + 10 + 90 = 180
8x + 100 = 180
8x = 80
x= 10
m<A= 4(10) + 5 = 40 + 5 = 45
31. 10x + 11x + 6 + 90 = 180
21x + 96 = 180
21x = 84
x = 4
m<A= 10(4)= 40
32. 5x + 5x + 130 = 180
10x + 130 = 180
10x = 50
x = 5
m<A= 5(5)= 25
33. 8x + 2 + 3x + 15 + 75 = 180
11x + 92 = 180
11x = 88
x = 8
m<A= 3(8)+15= 24+15= 39
34. x + 64 + x + 54 + 80 = 180
2x + 118 = 180
2x = 62
x = 31
m<A= 31 + 54= 85
