Question

The row-echelon form of the augmented matrix of a system of equations is given.Find the solution of the system

Answer 1

x = 9/4

y = 3/5

z = 2/3

w = -9/5

Explanation:

Technically, the matrix is in reduced row echelon form. If there are zeros above and below the ones, it is RREF. If there are zeros only below the ones, then it's REF.

Since it is in RREF, the augmented numbers to the right of the bar are already your solutions. Simply label the variables.