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Find the matrices of ​

Find the matrices of ​-example-1
User Bluewonder
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1 Answer

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20 votes


\huge{\sf \left[{x-2y\atop 6x-2z}\:\:\:{4y-3\atop 2y-z}\right]=\left[{-3\atop 4}\:\:\:{5\atop 3}\right]}

Creating equations


\\ \sf\longmapsto x-2y=-3\dots(1)


\\ \sf\longmapsto 4y-3=5\dots(2)


\\ \sf\longmapsto 6x-2z=4\dots(3)


\\ \sf\longmapsto 2y-z=3\dots(3)

  • From eq(2)


\\ \sf\longmapsto 4y-3=5


\\ \sf\longmapsto 4y=5+3


\\ \sf\longmapsto 4y=8


\\ \sf\longmapsto y=(8)/(4)


\\ \bf\longmapsto y=2

  • Put the value in eq(1)


\\ \sf\longmapsto x-2y=-3


\\ \sf\longmapsto x=-3+2y


\\ \sf\longmapsto x=-3+2(2)


\\ \sf\longmapsto x=-3+4


\\ \bf\longmapsto x=1

  • Put the value in eq(4)


\\ \sf\longmapsto 2y-z=3


\\ \sf\longmapsto z=2y-3


\\ \sf\longmapsto z=2(2)-3


\\ \sf\longmapsto z=4-3


\\ \bf\longmapsto z=1

User Usama Karim
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