Question 3551
Looking at the 3 equations, the coeeficients of z match the RighHand side values, so the solution, x=y=0 and z=1 satisfies your equations...without doing any calculations.


To "prove" this solution, you can do substitution/elimination etc or use Cramer's Rule...determinants of certain matrices. 


Using Cramer's rule, gives x=y=0 and z=1.


jon