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Copy and simplify the following expressions by combining like terms. Using or drawing sketches of algebra tiles may be helpful.  

  1. Add like terms.

  1. It may helpful to rearrange the terms so that all like terms are next to one another before simplifying. Remember to double check your work.

  1. Try thinking of these as algebra tiles. Can you combine -tiles with -tiles or unit tiles? If it helps you, you can use algebra tiles to help you solve this problem.

  1. Follow the steps outlined in part (a) and the hints from parts (b) and (c).

Use the tiles in the eTool below to write the algebraic expression.
Click the link at right for the full version of the eTool: algebra tiles (CPM)