SOLUTION: solve using cramer rule :- 3x+2y+4z=19 2x-y+z=3 6x+7y-z=7 x-y+2z=1 x+y+z=2 2x-y+z=5 3x-2y+z=-1 -x+y+7z=1 4x-3y-2z=-2

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Question 1049758: solve using cramer rule :- 3x+2y+4z=19 2x-y+z=3 6x+7y-z=7
x-y+2z=1 x+y+z=2 2x-y+z=5
3x-2y+z=-1 -x+y+7z=1 4x-3y-2z=-2
Answer by ikleyn(52776)   (Show Source): You can put this solution on YOUR website!
.
Hey,
will you become more happy, or will you become more knowledgeable if I (or somebody else) solve it for you?

I don't think so.

I will give you a better advise. 

1. Learn about the Cramer's method, for example, from these lessons

       - Determinant of a 3x3 matrix 

       - Co-factoring the determinant of a 3x3 matrix 

       - HOW TO solve system of linear equations in three unknowns using determinant (Cramer's rule)

       - Solving systems of linear equations in three unknowns using determinant (Cramer's rule)

   in this site.


2. If calculating the 3x3 determinants is too boring for you (it is really boring, I agree) then find free of charge online solvers for it.


   Such free of charge online solvers do exist.
   For example, one of them is under this link

   https://www.algebra.com/algebra/homework/Matrices-and-determiminant/determinant-of-3x3-matrix.solver


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