Posted by **nay nay** on Thursday, April 5, 2012 at 5:33pm.

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

- pre-algebra - incomplete -
**Ms. Sue**, Thursday, April 5, 2012 at 5:36pm
ok

And then what?

- pre-algebra -
**cakes**, Friday, March 22, 2013 at 1:40pm
Use algebra tiles to find the difference. Let one white tile equal +1 and one black tile equal –1.

- pre-algebra -
**alexia**, Sunday, October 19, 2014 at 9:32pm
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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