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.Com
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) (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:
\ =\ a_{11}a_{22}a_{33}\ +\ a_{12}a_{23}a_{31}\ +\ a_{13}a_{21}a_{32}\ -\ a_{31}a_{22}a_{13}\ -\ a_{32}a_{23}a_{11}\ -\ a_{33}a_{21}a_{12})
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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