![\scriptsize \sf \red{Find \: x \: and \: y, if } \: \left[ \begin{array}{cc}x & 3x \\ y & 4y\end{array} \right] \left[ \begin{array}{c}2 \: \\ 1\end{array} \right] = \: \left[ \begin{array}{cc}5 \\ 12\end{array} \right] .](https://tex.z-dn.net/?f=+%5Cscriptsize+%5Csf+%5Cred%7BFind+%5C%3A+++x++%5C%3A+and++%5C%3A+y%2C+if+%7D+%5C%3A+%5Cleft%5B+%5Cbegin%7Barray%7D%7Bcc%7Dx+%26amp%3B+3x+%5C%5C+y+%26amp%3B+4y%5Cend%7Barray%7D+%5Cright%5D+%5Cleft%5B+%5Cbegin%7Barray%7D%7Bc%7D2+%5C%3A++%5C%5C+1%5Cend%7Barray%7D+%5Cright%5D++%3D++%5C%3A+%5Cleft%5B+%5Cbegin%7Barray%7D%7Bcc%7D5+%5C%5C+12%5Cend%7Barray%7D+%5Cright%5D+. "\scriptsize \sf \red{Find \: x \: and \: y, if } \: \left[ \begin{array}{cc}x & 3x \\ y & 4y\end{array} \right] \left[ \begin{array}{c}2 \: \\ 1\end{array} \right] = \: \left[ \begin{array}{cc}5 \\ 12\end{array} \right] .")
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Answered by
1
Answer:
The value of x = 1, the value of y = 2
Step-by-step explanation:
[ x 3x] [2] = [5 ]
[ y 4y] [1 ] [12]
[(x × 2)+(3x × 1)] = [5]
[(y × 2)+(4y x 1)] = [12]
2x+3x=5
5x=5
x=1
2y+4y=12
6y=12
y=2
The value of x = 1, the value of y = 2
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22
Answer:
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