1. Determine the values of the variables to satisfy the equation. 4a - b+c + d = 14 2a – 2b + 3c – 7d = -21 a - 5b - c+ 2d = 24 %3D II a - 26 + 4c - d = 10

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Q: (b) 12> 5х- 3>-7 |

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