Perform the Row Operation(s) on the Given Augmented Matrix

question 216

Essay

Perform the row operation(s) on the given augmented matrix.
- $$\begin{array} { l } \mathrm { R } _ { 3 } = 4 \mathrm { r } _ { 1 } + \mathrm { r } _ { 3 } \\{ \left[ \begin{array} { r r r | r } - 7 & - 5 & - 1 & - 10 \\6 & - 2 & 9 & 5 \\28 & - 6 & 6 & 18\end{array} \right] }\end{array}$$

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