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Find solutions for each of the linear systems, using determinants (not Gauss Elimination). You may use...

Find solutions for each of the linear systems, using determinants (not Gauss Elimination). You may use a computer program to perform each determinant operation, but provide each of the values (?,?,?,?) used to calculate the solution and how they were obtained. Include a printout documenting your computer work.

a) −2? + 1? − 4? = −16, 5? + 1? − 3? = −6, 8? + 3? + 1? = 5   

b) 5? − ? = 31, 7? − 4? = 23, 6? + 2? = 6   

c) 24? − 84? + 63? = 4362, − 91? + 12? + 48? = 264, 51? − 74? + 59? = 4320

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