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Algebra - Matrix - Row Operation

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9x -8y +4z = -19
-27x + 24y -12z = 57
18x - 16y + 8z = -38

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Solution Summary

The expert examines the matrix row operations.

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Use row operations to solve the system
9x -8y +4z = -19
-27x + 24y -12z = 57
18x - 16y + 8z = -38

I am not familiar with the use of row operations to solve the system.

Row
Operation
1: 9 -8 4 -19
-27 24 -12 57
18 -16 8 -38

multiply the 1st row by 1/9 1 -8
________________________________________ 9 4
________________________________________ 9 -19
________________________________________ 9
-27 24 -12 57
18 -16 8 -38 ...

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