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pre-algebra

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Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

  • pre-algebra - incomplete - ,

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    And then what?

  • pre-algebra - ,

    Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

  • pre-algebra - ,

    Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

    6 – (–9)

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