2. Calcule os termos desconhecidos:
a) $\left(\begin{array}{cc}x & 3 \\ 5 & 2 y\end{array}\right)=\left(\begin{array}{cc}6 & 3 \\ 5 & 8\end{array}\right)$

Answer

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Answer

$\boxed{x = 6 \text{ and } y = 4}$

Steps

Step 1 ：Given the matrix equation: $\left(\begin{array}{cc}x & 3 \\ 5 & 2 y\end{array}\right)=\left(\begin{array}{cc}6 & 3 \\ 5 & 8\end{array}\right)$

Step 2 ：Compare the corresponding elements of the two matrices to form equations:

Step 3 ：$x = 6$

Step 4 ：$2y = 8$

Step 5 ：Solve the equations for x and y:

Step 6 ：$x = 6$

Step 7 ：$y = \frac{8}{2} = 4$

Step 8 ：$\boxed{x = 6 \text{ and } y = 4}$

2. Calcule os termos desconhecidos:a) $\left(\begin{array}{cc}x & 3 \\ 5 & 2 y\end{array}\right)=\left(\begin{array}{cc}6 & 3 \\ 5 & 8\end{array}\right)$

Answer

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2. Calcule os termos desconhecidos:
a) $\left(\begin{array}{cc}x & 3 \\ 5 & 2 y\end{array}\right)=\left(\begin{array}{cc}6 & 3 \\ 5 & 8\end{array}\right)$