From the following matrix equation, find the value of `x:[[x+y,4],[-5,3y]]=[[3,4],[-5,6]]`

Explanation

To solve the matrix equation \(\begin{pmatrix} x+y & 4 \\ -5 & 3y \end{pmatrix} = \begin{pmatrix} 3 & 4 \\ -5 & 6 \end{pmatrix}\), we will compare the corresponding elements of both matrices.

### Step 1: Write the matrix equation
The given matrix equation is:
\[ \begin{pmatrix} x+y & 4 \\ -5 & 3y \end{pmatrix} = \begin{pmatrix} 3 & 4 \\ -5 & 6 \end{pmatrix} \]

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