SOLUTION: Hi, my name is Keneshia and hopefully you can help me with this matrice problem. 4x1-x2+2x3=3 -4x1+x2-3x3=-10 8x1-2x2+9x3=-1 All of the problem is together.

 

Hi



  |Adding first 2 EQ, 

  |Multiplying 2nd EQ by 2 and adding to 3rd EQ

 7 ≠  -7   no solution                                                  

 Basic Plan:

•	Use a pair of equations and eliminate one variable.

•	Use a different pair of equations and eliminate the same variable.

•	Solve the two-variable system found, determining the values of those variables.

•	Substitute those into an original equation to find the remaining variable’s value.



Note: A false statement generated ( ≠ ) indicates no solution                                                    

A true statement (an identity) signals infinitely many solutions.