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Obtain an equivalent system by performing the stated elementary operation on the system. Replace the third...

Obtain an equivalent system by performing the stated elementary operation on the system. Replace the third equation by the sum of itself and -2 times the second equation.

9x - 7y - 10z = 27

3x + 13y - 12z = 15

2x + 2y - 7z = -10

math   Statistics-And-Probability   
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