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What are the solutions to x and y in this system of equations?  solve using matrices...

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bobby9901 | Student, College Freshman | Salutatorian

Posted February 23, 2013 at 10:15 AM via web

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What are the solutions to x and y in this system of equations?  solve using matrices (row operations)

24x-5y=-38

-3x+4y=-2

Tagged with linear algebra 1, math

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pramodpandey | College Teacher | Valedictorian

Posted February 23, 2013 at 10:54 AM (Answer #1)

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`R1->(1/24)R1`

1     -5/24       -19/12

-3     4            -2

`R2->R2+3R1`

1     -5/24       -19/12

0      81/24      -81/12

`R2->(24/81)R2`

1     -5/24       -19/12

0       1              -2

`R1->R1+(5/24)R2` 

1       0              -2

0       1              -2

 

x=-2

y=-2

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