Question: 1. Find the values of x, y and z when
- 4.5x + 7y + 3z = 128.5
- 6x + 18.2y + 12z = 270.8
- 3x + 8y + 7z = 139
2. Solve for A, B, C and D when
- A + 6B + 25C + 17D = 843
- 3A + 14B + 60C + 21D = 1,286.5
- 10A + 3B + 4C + 28D = 1,206
- 6A + 2B + 12C + 51D = 1,096