Diketahui matriks A=[tex] \left[\begin{array}{ccc}4a&8&4\\6&-1&-3b\\5&3c&9\end{array}\right][/tex] dan B=[tex] \left[\begin{array}{ccc}12&8&4\\6&-1&-3a\\5&b8&

[tex] \left[\begin{array}{ccc}4a&8&4\\6&-1&-3b\\5&3c&9\end{array}\right] = \left[\begin{array}{ccc}12&8&4\\6&-1&-3a\\5&8b&9\end{array}\right] \\ \\ 4a=12-> a=3 \\ \\ -3b=-3a \\ -3b=-3.3 \\ b=3 \\ \\ 3c=8b \\ 3c=8.3 \\ c=8 \\ \\ a+b+c = 3+3+8=14[/tex]