Inactive Tutor answered • 02/02/17
Tutor
New to Wyzant
you mean what are the solutions to this SYSTEM of three linear equations with three unknowns.
Look carefully at the second equation; it's just twice the first equation, so 1st & 2nd equations are equivalent, each saying that the sum of x, y and z= 1. Then the third equation CONTRADICTS that, saying that this sum has to be 0.
IMPOSSIBLE; no solution.
Inactive Tutor
Of course, if 1st and 2nd equations are equivalent and third equation contradicts "that", then it comes as no surprise that first and third equations are contradictory since "that" is a reference to BOTH 1st & 2nd equations.
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02/02/17
Inactive Tutor
02/02/17