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For certain simultaneous equations, if ...

For certain simultaneous equations, if
`(i) D=-5`, `D_(x)=15`, `D_(y)=-10`
`(ii) D=4`, `D_(x)=2`, `D_(y)=8`. Find the values of `x` and `y`.

Answer

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Knowledge Check

  • For simultaneous equations in x and y , if D = 30 , D_(x) = -18 , D_(y) = -12 , then what is the value of y ?

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    A
    7
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    `-7`
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