Question

Solve for x and y matrix

Answer 1

`x=-1`

`y=5`

Explanation:

`\begin{pmatrix}x&y\\ \:-1&4\end{pmatrix}\begin{pmatrix}2&5\\ \:4&1\end{pmatrix}=\begin{pmatrix}18&0\\ \:14&-1\end{pmatrix}`

`\begin{pmatrix}x&y\\ -1&4\end{pmatrix}\begin{pmatrix}2&5\\ 4&1\end{pmatrix}`

`=\begin{pmatrix}x* \:2+y* \:4&5x+y\\ 14&-1\end{pmatrix}`

`=\begin{pmatrix}18&0\\ 14&-1\end{pmatrix}`

`\begin{bmatrix}x* \:2+y* \:4=18\\ 5x+y=0\end{bmatrix}`

`x=-1`

`y=5`

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