Mark M. answered 07/26/20
Retired math prof. Very extensive Precalculus tutoring experience.
Multiply equation 1 by -3 and add to equation 3. Also, multiply equation 1 by 2 and add to equation 2:
3x3 = 6
-3x3 = -1
The system has NO SOLUTION since there is no value of x3 that satisfies both of the equations above.