Enter values for the matrix.
Enter fractions with a slash, as "3/4" or "-10/3".

Perform the indicated operation(s) on the matrix.

\(\left[\begin{array}{rrr|r}-1 & 4 & -4 & -18 \\ 2 & 5 & -2 & -14 \\ -3 & 4 & -2 & -4\end{array}\right]\begin{array}{ll}\phantom{1} & -R_1 \to R_1 \\ \phantom{1} & \\ \phantom{1} & \end{array}\)