Matrix Division Calculator

The calculator will find the quotient of two matrices (if possible), with steps shown. It divides matrices of any size up to 7x7 (2x2, 3x3, 4x4 etc.).

Size of the first matrix:

$\times$

Matrix:

Size of the second matrix:

$\times$

Matrix:

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Your Input

Calculate $$$\frac{\left[\begin{array}{ccc}4 & 5 & 7\\2 & 1 & 0\\1 & 2 & 3\end{array}\right]}{\left[\begin{array}{ccc}1 & 1 & 1\\2 & 3 & 4\\3 & 1 & 1\end{array}\right]}.$$$

Solution

By definition, $$$\frac{A}{B}=A\cdot B^{-1}$$$.

So, first find the inverse of $$$\left[\begin{array}{ccc}1 & 1 & 1\\2 & 3 & 4\\3 & 1 & 1\end{array}\right]$$$.

$$$\left[\begin{array}{ccc}1 & 1 & 1\\2 & 3 & 4\\3 & 1 & 1\end{array}\right]^{-1} = \left[\begin{array}{ccc}- \frac{1}{2} & 0 & \frac{1}{2}\\5 & -1 & -1\\- \frac{7}{2} & 1 & \frac{1}{2}\end{array}\right]$$$ (for steps, see inverse matrix calculator).

Finally, multiply the matrices: $$$\left[\begin{array}{ccc}4 & 5 & 7\\2 & 1 & 0\\1 & 2 & 3\end{array}\right]\cdot \left[\begin{array}{ccc}- \frac{1}{2} & 0 & \frac{1}{2}\\5 & -1 & -1\\- \frac{7}{2} & 1 & \frac{1}{2}\end{array}\right] = \left[\begin{array}{ccc}- \frac{3}{2} & 2 & \frac{1}{2}\\4 & -1 & 0\\-1 & 1 & 0\end{array}\right]$$$ (for steps, see matrix multiplication calculator).

Answer

$$$\frac{\left[\begin{array}{ccc}4 & 5 & 7\\2 & 1 & 0\\1 & 2 & 3\end{array}\right]}{\left[\begin{array}{ccc}1 & 1 & 1\\2 & 3 & 4\\3 & 1 & 1\end{array}\right]} = \left[\begin{array}{ccc}- \frac{3}{2} & 2 & \frac{1}{2}\\4 & -1 & 0\\-1 & 1 & 0\end{array}\right] = \left[\begin{array}{ccc}-1.5 & 2 & 0.5\\4 & -1 & 0\\-1 & 1 & 0\end{array}\right]$$$A