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Solve the system using Cramer's Rule.

`-x-3y = 2`
`-4x-2y = 18`

Find the determinant `D` (denominator).
`D` =

Find the determinant `D_x` associated with `x`.
`D_x` =

Find the determinant `D_y` associated with `y`.
`D_y` =

The solution is `(x,y)` = (,).

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