Tolong dikerjakan dengan caranya ya,,
Diketahui matriks A =![\left[\begin{array}{ccc}7&-4&\\2&-2\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%26-4%26%5C%5C2%26-2%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}7&-4&\\2&-2\\\end{array}\right]")
dan B = ![\left[\begin{array}{ccc}-18&8&\\-11&13\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-18%268%26%5C%5C-11%2613%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}-18&8&\\-11&13\\\end{array}\right]")
. Invers matriks ( 3A + B ) adalah 
= ...
A.![\left[\begin{array}{ccc}7&4&\\5&3\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%264%26%5C%5C5%263%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}7&4&\\5&3\\\end{array}\right]")
B.![\left[\begin{array}{ccc}7&-4&\\-5&3\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%26-4%26%5C%5C-5%263%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}7&-4&\\-5&3\\\end{array}\right]")
C.![\left[\begin{array}{ccc}-7&4&\\5&-3\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-7%264%26%5C%5C5%26-3%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}-7&4&\\5&-3\\\end{array}\right]")
D.![\left[\begin{array}{ccc}7&-5&\\-4&3\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%26-5%26%5C%5C-4%263%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}7&-5&\\-4&3\\\end{array}\right]")
E.![\left[\begin{array}{ccc}7&5&\\4&3\\\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D7%265%26%5C%5C4%263%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}7&5&\\4&3\\\end{array}\right]")
Diketahui matriks A =
A.
B.
C.
D.
E.
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C= 3A+B =
det C =