"slack variable" meaning in English

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      "form": "slack variables",
      "tags": [
        "plural"
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      "expansion": "slack variable (plural slack variables)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
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      "glosses": [
        "In an optimization problem, a variable added to an inequality constraint to transform it into an equality."
      ],
      "id": "en-slack_variable-en-noun-g6af1kyK",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "optimization",
          "optimization"
        ],
        [
          "problem",
          "problem"
        ],
        [
          "inequality",
          "inequality"
        ],
        [
          "constraint",
          "constraint"
        ],
        [
          "transform",
          "transform"
        ],
        [
          "equality",
          "equality"
        ]
      ],
      "raw_glosses": [
        "(mathematics) In an optimization problem, a variable added to an inequality constraint to transform it into an equality."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "pelivaramuuttuja"
        }
      ],
      "wikipedia": [
        "slack variable"
      ]
    }
  ],
  "word": "slack variable"
}

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      "form": "slack variables",
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  "lang_code": "en",
  "pos": "noun",
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        "In an optimization problem, a variable added to an inequality constraint to transform it into an equality."
      ],
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          "mathematics",
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        [
          "optimization",
          "optimization"
        ],
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        ],
        [
          "inequality",
          "inequality"
        ],
        [
          "constraint",
          "constraint"
        ],
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          "transform",
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          "equality",
          "equality"
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        "(mathematics) In an optimization problem, a variable added to an inequality constraint to transform it into an equality."
      ],
      "topics": [
        "mathematics",
        "sciences"
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        "slack variable"
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  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "pelivaramuuttuja"
    }
  ],
  "word": "slack variable"
}