Question
Find the values of x, y and z from the following equations:
• $\left[ {\begin{array}{cccccccccccccccccccc}4&3\\x&5\end{array}} \right] = \left[ {\begin{array}{cccccccccccccccccccc}y&z\\1&5\end{array}} \right]$
• $\left[ {\begin{array}{cccccccccccccccccccc}{x + y}&2\\{5 + z}&{xy}\end{array}} \right] = \left[ {\begin{array}{cccccccccccccccccccc}6&2\\5&8\end{array}} \right]$
• $\left[ {\begin{array}{cccccccccccccccccccc}{x + y + z}\\{x + z}\\{y + z}\end{array}} \right] = \left[ {\begin{array}{cccccccccccccccccccc}9\\5\\7\end{array}} \right]$