Problem
Write the system of linear equations represented by the augmented matrix to the right. Use $x, y$, and $z$ for the variables. \[ \left[\begin{array}{rrr|r} 2 & 0 & 5 & -13 \\ 0 & 1 & -4 & 11 \\ 7 & 8 & 0 & 5 \end{array}\right] \] Write the equation represented by the first row. an example Get more help - Clear all Check answer
Solution
Step 1 ：The first row of the augmented matrix represents the equation:
Step 2 ：2x + 0y + 5z = -13
Step 3 ：Simplifying, we have:
Step 4 ：2x + 5z = -13
Step 5 ：Therefore, the equation represented by the first row is:
Step 6 ：\(2x + 5z = -13\)
