Fill in the missing numbers. \( \left[\begin{array}{cc}-1 & 0 \\ -7 & 2\end{array}\right]+\left[\begin{array}{ll}7 & 6 \\ 5 & 5\end{array}\right]=\left[\begin{array}{ll}6 & 6 \\ \square\end{array}\right] \)

To find the missing number, you can start by adding the corresponding elements of the two matrices. The first matrix is: \[ \left[\begin{array}{cc}-1 & 0 \\ -7 & 2\end{array}\right] \] The second matrix is: \[ \left[\begin{array}{ll}7 & 6 \\ 5 & 5\end{array}\right] \] When we add them together, we calculate each element: For the element in the first row, first column: \[ -1 + 7 = 6 \] For the element in the first row, second column: \[ 0 + 6 = 6 \] For the element in the second row, first column: \[ -7 + 5 = -2 \] For the element in the second row, second column: \[ 2 + 5 = 7 \] Now, we can fill in the missing number in the resulting matrix: \[ \left[\begin{array}{cc}6 & 6 \\ -2 & 7\end{array}\right] \] Thus, the missing number is \(-2\), making the complete equation: \[ \left[\begin{array}{cc}-1 & 0 \\ -7 & 2\end{array}\right]+\left[\begin{array}{ll}7 & 6 \\ 5 & 5\end{array}\right]=\left[\begin{array}{ll}6 & 6 \\ -2 & 7\end{array}\right] \]