Linear Systems & Matrices · Easy problem

Let $A = \begin{bmatrix} 2 & -1 \\ 3 & 4 \end{bmatrix}$ and $B = \begin{bmatrix} -5 & 2 \\ 1 & 0 \end{bmatrix}$. Find the entry in row $2$, column $1$ of $A + B$.