x + y + z = 1 (Eq1) x + y − 2z = -2 (Eq2) 3x − 2y + z = 6 (Eq3)

Which of the following elementary row operations could be used to cancel the z term from equation 2 in the following system of equations

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1 Answer

Add twice Eq1 or twice Eq3 to Eq2.

Adding twice Eq1 to Eq2 leads immediately to z=1.

The final solution follows soon after : (1,-1,1).

by Top Rated User (1.2m points)

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