# 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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