Answer:
(-9.700, -9.341, 1.597)
Step-by-step explanation:
You want a solution to the given set of 3 equations in 3 unknowns.
Technology
Modern spreadsheets and calculators are capable of solving systems of equations like the one given. It is worthwhile to learn to use these features of the technology. The solution appears about as quickly as you can enter the problem.
The attachment shows the solution is ...
(x, y, z) ≈ (-9.7, -9.341, 1.597)
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Additional comment
While this set of equations can be solved using the inverse of the coefficient matrix multiplied by the constant vector, we have chosen to use the calculator feature that puts the augmented matrix in reduced row-echelon form. In this form, the rightmost column corresponds to the answer vector.
