Moderate# Using Matrix Multiplication to Solve Equations

SATSTM-3XTJH8

Free

Find real numbers $x$ and $y$, such that

$$ A=\begin{bmatrix} 1&2\\\ 3&5 \end{bmatrix} \quad \quad B=\begin{bmatrix} x\\\ y \end{bmatrix}$$

...and:

$$AB = \begin{bmatrix} 3\\\ 5 \end{bmatrix}$$