Question

Find x and y if $\left(\begin{array}{cc}x+3& 4\\ y-4& x+y\end{array}\right)=\left(\begin{array}{cc}8& 4\\ 2& 11\end{array}\right)$

• A. x = -6, y = -5
  
• B. x = -5, y = -6
  
• C. x = 5, y = 6
  
• D. x = 6, y = 5

Answer 1

The correct option is C

x = 5, y = 6

The given two matrices are equal
$\Rightarrow x+3=8x=5$
$\Rightarrow y-4=2y=6$