If $m - 5n = 2$,then the value of $(m^3 - 125n^3 - 30mn)$ is

  • A
    $7$
  • B
    $8$
  • C
    $9$
  • D
    $6$

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$I.$ $12x + 3y = 14$
$II.$ $4x + 2y = 16$

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