SOLUTION: Apologies- error was found on on last question that was emailed: Correct problems is: 3x+5y+4z=13 5x+2y+3z=-9 6x+3y+4z=-8 Thanks

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: Apologies- error was found on on last question that was emailed: Correct problems is: 3x+5y+4z=13 5x+2y+3z=-9 6x+3y+4z=-8 Thanks       Log On


   

Question 346674: Apologies- error was found on on last question that was emailed:
Correct problems is:
3x+5y+4z=13
5x+2y+3z=-9
6x+3y+4z=-8
Thanks
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Do you just want the answer, or do you need the steps of procedure for some particular method of solving it?

I used Cramer's Rule. Where the determinant of a 3X3 matrix is:





Using MS Excel to calculate the determinants, I got:









Hence







John

My calculator said it, I believe it, that settles it
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