tentukan nilai x dan y dengan metode determinan 2x + 3y = 13 3x - 4y = -6
Matematika
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Pertanyaan
tentukan nilai x dan y dengan metode determinan
2x + 3y = 13
3x - 4y = -6
2x + 3y = 13
3x - 4y = -6
2 Jawaban
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1. Jawaban xkuadratz
[tex] x= \frac{\left|\begin{array}{ccc}13&3\\-6&-4\end{array}\right| }{\left|\begin{array}{ccc}2&3\\3&-4\end{array}\right| } = \frac{-52+18}{-8-9}= \frac{-34}{-17}=2 \\ \\ \\ y= \frac{\left|\begin{array}{ccc}2&3\\13&-6\end{array}\right| }{\left|\begin{array}{ccc}2&3\\3&-4\end{array}\right| }= \frac{-12-39}{-8-9}= \frac{-51}{-17}=3 [/tex] -