Answer
$$
\begin{bmatrix}
4&-5&7\\
-1&3&-8\\
7&-5&0\\
-4&1&2
\end{bmatrix}
\begin{bmatrix}
x_1\\x_2\\x_3
\end{bmatrix}
=
\begin{bmatrix}
6\\-8\\0\\7
\end{bmatrix}
$$
Work Step by Step
Each column of the matrix is one of the vectors in the vector equation. Each entry in the vector is one of the coefficients multiplied by the vectors in the vector equation. The right hand side is the same in the vector equations and the matrix-vector equation.
