Construct mathematical proofs dragging and dropping blocks

Let $A, B,$ and $C$ be propositions. Prove that $(A \land C) \lor (A \land B) \rightarrow A $

Drag from here:
  • This completes the proof.
  • Since $A \land B$ is true, we know $A$ is true.
  • Proof by Cases:
  • Case $A \land B$:
  • Since $A \land C$ is true, we know $A$ is true.
  • Case $A \land C$:
Construct your solution here:

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Title:
Construct mathematical proofs dragging and dropping blocks

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Started at:
2026-08-04 21:50:18 (CDT)
Duration:
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{
  "proof-by-cases": [
    {
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      "ranking": -1,
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      "inner_html": " Proof by Cases:",
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    },
    {
      "tag": "2",
      "uuid": "b1a589de-b681-443e-940c-a5d5087aafd4",
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      "group_info": {
        "tag": "g1",
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      },
      "inner_html": " Case $A \\land C$: ",
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    },
    {
      "tag": "3",
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      "inner_html": " Since $A \\land C$ is true, we know $A$ is true.",
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    },
    {
      "tag": "4",
      "uuid": "da31a3d7-cf2a-480c-a59a-135a349d6c87",
      "final": false,
      "index": 3,
      "indent": null,
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        "tag": "g2",
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      "inner_html": " Case $A \\land B$: ",
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    },
    {
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      },
      "inner_html": " Since $A \\land B$ is true, we know $A$ is true.",
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    },
    {
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      "inner_html": "This completes the proof.",
      "distractor_for": null,
      "initially_placed": false,
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      "distractor_feedback": null
    }
  ]
}
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