system solution of matrices
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Which of the following is not permitted when solving a system of linear equations using matrices?
interchange columns
A system of equations can be solved by which of the following methods? Select all that apply.
matrix method back substitution
Use matrix operations and substitution to determine which of the following numerical values for z can be substituted into the second equation to solve for y? 2x + y - z = -8 2y + 3z = -6 -x + y + z = -4
z=2
