![A=\left[\begin{array}{ccc}8&-3\\3&y+2\end{array}\right]](/tpl/images/0498/6761/f0806.png)
![+B=\left[\begin{array}{ccc}3x&z+4\\w&1/2y\end{array}\right]](/tpl/images/0498/6761/201ae.png)
![C=\left[\begin{array}{ccc}x&2z\\4&y\end{array}\right]](/tpl/images/0498/6761/cd159.png)
![\left[\begin{array}{ccc}8+3x&-3+z+4\\3+w&y+2+y/2\end{array}\right]](/tpl/images/0498/6761/069d5.png)
![=\left[\begin{array}{ccc}x&2z\\4&y\end{array}\right]](/tpl/images/0498/6761/21ca7.png)
![\left[\begin{array}{ccc}3(-4)&1+4\\1&1(-4)/2\end{array}\right]](/tpl/images/0498/6761/7161c.png)
![\left[\begin{array}{ccc}-12&5\\1&-2\end{array}\right]](/tpl/images/0498/6761/673df.png)
What is the value of matrix b if a+b=c?
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Answers: 3
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