Answer:
Part A: x = 5
Part B: b = -4
Part C: x = -12
Explanation:
Part A:
8(x + 2) – 3(3x + 4) = -1
8x + 16 - 9x - 12 = -1
-x + 4 = -1
-x = -5
x = 5
Part B:
10b + 2 – 5b = 2 – 5(b + 8)
5b + 2 = 2 - 5b - 40
10b + 2 = 2 - 40
10b + 2 = -38
10b = -40
b = -4
Part C:
0.3(x – 6) = 0.2x + 0.5x + 7 - 4
0.3x - 1.8 = 0.7x + 3
0.3x - 0.7x = 3 + 1.8
-0.4x = 4.8
x = -12
Hope this helps! I apologize if I'm incorrect.