Tolong ya bantuannya beserta caranya..
1. Jika![\left[\begin{array}{ccc}4&&5\\3-x&&-2\end{array}\right] + \left[\begin{array}{ccc}2&&y+2\\6&&7\end{array}\right] = \left[\begin{array}{ccc}6&&4\\6&&5\end{array}\right]](https://tex.z-dn.net/?f=+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26%265%5C%5C3-x%26%26-2%5Cend%7Barray%7D%5Cright%5D+%2B+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26%26y%2B2%5C%5C6%26%267%5Cend%7Barray%7D%5Cright%5D+%3D+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26%264%5C%5C6%26%265%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}4&&5\\3-x&&-2\end{array}\right] + \left[\begin{array}{ccc}2&&y+2\\6&&7\end{array}\right] = \left[\begin{array}{ccc}6&&4\\6&&5\end{array}\right]")
maka,nilai x-y =
1. Jika
maka,nilai x-y =
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⇒ y + 7 = 4
⇒ y = 4 - 7
⇒ y = -3
⇒ (3 - x) + 6 = 6
⇒ 9 - x = 6
⇒ -x = -3
⇒ x = 3
Maka, nilai x - y ⇒ 3 - (-3) ⇒ 3 + 3 ⇒ 6