Question

Solve the following system of equations.

2x + 3y – z = 1
3x + y + 2z = 12
x + 2y – 3z = –5

Answer 1

What methods have you studied thus far?

Answer 2

I could solve using substitution, have you used that method?

Answer 3

Use Cramer's rule here. It's quicker.

Answer 4

i was using my calculator but after i plugged it in i don't know how to get the answers after that

Answer 5

Limitless will solve using Cramer's rule, that is a method using matrice.

Answer 6

how do i do it?

Answer 7

Form a coefficient 3 by 3 determinant containing all of the coefficients of the \(x\)'s in the first column, all the coefficients of the \(y\)'s in the second column, and all of the coefficients of the \(z\)'s in the third column.

To solve for a specific variable, swap its column of coefficients with the column of solutions.

Answer 8

I would show an example, but this requires far too much LaTeX typesetting for me to do so.